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[[Portal:Science|''Back to Science Portal'']]
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== Pedagogy of Science ==
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= Pedagogy of Science =
 
   
There are several aspects to teaching science - bringing about an appreciation and understanding of the world around us, developing a scientific method of approaching problems and developing solutions (this scientific method will be discussed more in detail later) and build skills that will allow the learners to build their knowledge.  Obviously this means more than just the transfer of the body of knowledge. How these objectives will be met will also vary depending upon the context of the learner.   
 
There are several aspects to teaching science - bringing about an appreciation and understanding of the world around us, developing a scientific method of approaching problems and developing solutions (this scientific method will be discussed more in detail later) and build skills that will allow the learners to build their knowledge.  Obviously this means more than just the transfer of the body of knowledge. How these objectives will be met will also vary depending upon the context of the learner.   
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This page needs contributions.  Please help develop it!!
 
This page needs contributions.  Please help develop it!!
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== Methods of Assessment ==
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= Institutions for Science Education =
 
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=== Exam Question papers ===
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Shashi Kumar from GHS Bangalore, Rural has shared a sample question paper for the 8th Midterm Exam.
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'''Question - How do we share this.  We need to learn how to link files -the upload takes only images'''
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== Science Education Institutions ==
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# [http://www.iiserpune.ac.in/ Indian Institute of Scientific Education and Research]<br> The Government of India, through the Ministry of Human Resource Development (MHRD), has established five Indian Institutes of Science Education and Research (IISER). These institutes are located in Bhopal, Mohali, Pune, Kolkata and Thiruvanantapuram. <br> The IISERs represent a unique initiative in India where teaching and education are totally integrated with state-of-the-art research nurturing both curiosity and creativity in an intellectually vibrant atmosphere of research. Each IISER is an autonomous institution awarding its own Masters and Doctoral degrees. <br>  
 
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#[http://www.hbcse.tifr.res.in/ Homi Bhabha Centre for Science Education]<br>Homi Bhabha Centre for Science Education (HBCSE) is a National Centre of the Tata Institute of Fundamental Research (TIFR), Mumbai. The broad goals of the Centre are to promote equity and excellence in science and mathematics education from primary school to undergraduate college level, and encourage the growth of scientific literacy in the country.
# Indian Institute of Scientific Education and Research [[http://www.iiserpune.ac.in/]]
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The Government of India, through the Ministry of Human Resource Development (MHRD), has established five Indian Institutes of Science Education and Research (IISER).These institutes are located in Bhopal, Mohali, Pune, Kolkata and Thiruvanantapuram.
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The IISERs represent a unique initiative in India where teaching and education are totally integrated with state-of-the-art research nurturing both curiosity and creativity in an intellectually vibrant atmosphere of research. Each IISER is an autonomous institution awarding its own Masters and Doctoral degrees.
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<br>
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# Homi Bhabha Centre for Science Education [[http://www.hbcse.tifr.res.in/]]
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Homi Bhabha Centre for Science Education (HBCSE) is a National Centre of the Tata Institute of Fundamental Research (TIFR), Mumbai. The broad goals of the Centre are to promote equity and excellence in science and mathematics education from primary school to undergraduate college level, and encourage the growth of scientific literacy in the country.
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== Articles by teachers ==
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=== Blog by Dr S N Prasad, Principal(Retd), RIE ===
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= Articles by teachers on Science and Science Education =
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== Blog by Dr S N Prasad, Principal(Retd), RIE ==
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'''About the author'''
 
Dr. S N Prasad is a Former Principal & Professor of Physics, Regional Institute of Education [NCERT], Mysore. Teacher Educator and Educational Consultant with over forty years of field experience. He is actively involved in popularization of Science, including Observational Astronomy, through lectures, demonstrations and writings
 
Dr. S N Prasad is a Former Principal & Professor of Physics, Regional Institute of Education [NCERT], Mysore. Teacher Educator and Educational Consultant with over forty years of field experience. He is actively involved in popularization of Science, including Observational Astronomy, through lectures, demonstrations and writings
He blogs at http://drsnprasadmysoreindia.blogspot.com/
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He blogs at http://drsnprasadmysoreindia.blogspot.com/<br>
 
   
His most recent blog is on the "End of the World", reproduced below. <br>
 
His most recent blog is on the "End of the World", reproduced below. <br>
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'''FRIDAY, DECEMBER 14, 2012'''
      
'''Waiting for the world to end! – What will (not) happen on 21st December 2012'''
 
'''Waiting for the world to end! – What will (not) happen on 21st December 2012'''
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-      Albert Einstein
 
-      Albert Einstein
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Countdown to doomsday
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'''Countdown to doomsday'''
    
Down the ages, one of the favourite pastimes of soothsayers, prophets, oracles, astrologers, ufologists, numerologists and an assortment of similar scaremongers and pseudoscientists has been to make outrageous ‘predictions’ of doomsday scenarios for the earth and watch the chaos created in the minds of the gullible from the sidelines.  They continue to stay on the sidelines if nothing of any consequence happens, as indeed is the case almost always, and jump into the fray with an ‘I told you so’ if anything even remotely resembling their predictions actually happens.  Whatever be the eventual outcome, the more enterprising of these charlatans would have made a fortune through their books, writings, ‘astrological advice’, special religious ceremonies in appeasement of the ‘angry’ gods, sales of ‘survival kits’, sponsored and paid media events, etc., and the gullible would have been taken for a ride, swallowing the bait hook, line and sinker.
 
Down the ages, one of the favourite pastimes of soothsayers, prophets, oracles, astrologers, ufologists, numerologists and an assortment of similar scaremongers and pseudoscientists has been to make outrageous ‘predictions’ of doomsday scenarios for the earth and watch the chaos created in the minds of the gullible from the sidelines.  They continue to stay on the sidelines if nothing of any consequence happens, as indeed is the case almost always, and jump into the fray with an ‘I told you so’ if anything even remotely resembling their predictions actually happens.  Whatever be the eventual outcome, the more enterprising of these charlatans would have made a fortune through their books, writings, ‘astrological advice’, special religious ceremonies in appeasement of the ‘angry’ gods, sales of ‘survival kits’, sponsored and paid media events, etc., and the gullible would have been taken for a ride, swallowing the bait hook, line and sinker.
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The most bizarre and outrageous of the doomsday predictions has been reserved for this year (2012) in general and specifically for 21st December 2012 in particular.  Why this particular date?  Primarily because it is the day of the winter solstice (as viewed from the northern hemisphere) when the Sun is at its southernmost point from the equator; for this reason it is treated as rather special in astronomical terms and highly significant in astrological reckoning.  So far, nothing of any cognizable significance has happened in the year per se, so all the attention is now focused on the specific doomsday date just a week away from now.  While most people are unconcerned with and indeed indifferent to whatever may or may not happen, large segments of the population everywhere in the world are anxious, apprehensive and at the very least nervous about what the day may unfold and some are even contemplating ‘precautions’ like hiding themselves in safe locations as one might do during an eclipse or, much less likely, at the time of an air raid.  In India, these precautions are taking the more traditional form of appeasing the gods with some of the choicest and most expensive offerings to the accompaniment of special prayers and poojas in temples.  The market forces are at work and the managers, owners and priests of the temples are set to make a huge killing on that day, with the service charges and rates shooting up like airfares during Diwali and Christmas holidays.  Like air tickets, there are already a lot of advance bookings.
 
The most bizarre and outrageous of the doomsday predictions has been reserved for this year (2012) in general and specifically for 21st December 2012 in particular.  Why this particular date?  Primarily because it is the day of the winter solstice (as viewed from the northern hemisphere) when the Sun is at its southernmost point from the equator; for this reason it is treated as rather special in astronomical terms and highly significant in astrological reckoning.  So far, nothing of any cognizable significance has happened in the year per se, so all the attention is now focused on the specific doomsday date just a week away from now.  While most people are unconcerned with and indeed indifferent to whatever may or may not happen, large segments of the population everywhere in the world are anxious, apprehensive and at the very least nervous about what the day may unfold and some are even contemplating ‘precautions’ like hiding themselves in safe locations as one might do during an eclipse or, much less likely, at the time of an air raid.  In India, these precautions are taking the more traditional form of appeasing the gods with some of the choicest and most expensive offerings to the accompaniment of special prayers and poojas in temples.  The market forces are at work and the managers, owners and priests of the temples are set to make a huge killing on that day, with the service charges and rates shooting up like airfares during Diwali and Christmas holidays.  Like air tickets, there are already a lot of advance bookings.
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The Doomsday ‘predictions’
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'''The Doomsday ‘predictions’'''
    
Unlike ordinary times, the doomsayers this time have a number of what they consider ‘surefire’ alternatives to back on to ensure the end of the world no later than this year.  Here are a few of the more ‘reliable’ ones with brief descriptions of how they are supposed to happen and a very reassuring expert assessment of how they cannot happen the way they are envisaged.  Before I delve into these I strongly recommend the reader to go through an excellent website specifically dedicated to discussing these ‘manufactured fantasies’ and related issues for what they really are: http://www.2012hoax.org/.  Equally illuminating is the article titled “2012 and Counting” by NASA scientist Dr David Morrison in which he answers the ‘Top 20 Questions about 2012’.  It is available at:  http://www.skeptic.com/reading_room/2012-and-counting/.
 
Unlike ordinary times, the doomsayers this time have a number of what they consider ‘surefire’ alternatives to back on to ensure the end of the world no later than this year.  Here are a few of the more ‘reliable’ ones with brief descriptions of how they are supposed to happen and a very reassuring expert assessment of how they cannot happen the way they are envisaged.  Before I delve into these I strongly recommend the reader to go through an excellent website specifically dedicated to discussing these ‘manufactured fantasies’ and related issues for what they really are: http://www.2012hoax.org/.  Equally illuminating is the article titled “2012 and Counting” by NASA scientist Dr David Morrison in which he answers the ‘Top 20 Questions about 2012’.  It is available at:  http://www.skeptic.com/reading_room/2012-and-counting/.
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The Mayan Myth
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'''The Mayan Myth'''
    
The Mayans of South America is one of the better known ancient civilizations, now long extinct, with some notable achievements in Astronomy and calendar making to add weight to their intellectual prowess.  The chief 2012 doomsday myth concerns how their longstanding calendar calligraphy ends abruptly this year end.  A whole cottage industry has grown around asserting that the end of the Mayan calendar forebodes the end of the world for, as the argument goes, they would otherwise have continued with their calendar making!  This is like claiming that a packaged medical product, marked with an expiry date that says ‘Use before…’, suddenly disappears (along with the container) after the expiry date!  Here is a doomsayer with precisely such an implication when he merely refers to a ‘suggestion…that Armageddon would overtake the degenerate peoples of the world and all creation on the final day of the thirteenth [baktun].  Thus…our present universe…[would] be annihilated on December 23, 2012, when the Great Cycle of the Long Count reaches completion’.  To quote an expert on this issue, “Contrary to popular understanding, the ancient Meso-Americans, be they Maya or any other group, left no oral or written “prophecy” record about what would or could happen on or about the year 2012 other than a great age of 5125 years would end and another commence.”  But who would be interested in these prosaic facts in the face of such cataclysmic claims to both dazzle and frighten the vast majority of believers in apocalyptic stories?
 
The Mayans of South America is one of the better known ancient civilizations, now long extinct, with some notable achievements in Astronomy and calendar making to add weight to their intellectual prowess.  The chief 2012 doomsday myth concerns how their longstanding calendar calligraphy ends abruptly this year end.  A whole cottage industry has grown around asserting that the end of the Mayan calendar forebodes the end of the world for, as the argument goes, they would otherwise have continued with their calendar making!  This is like claiming that a packaged medical product, marked with an expiry date that says ‘Use before…’, suddenly disappears (along with the container) after the expiry date!  Here is a doomsayer with precisely such an implication when he merely refers to a ‘suggestion…that Armageddon would overtake the degenerate peoples of the world and all creation on the final day of the thirteenth [baktun].  Thus…our present universe…[would] be annihilated on December 23, 2012, when the Great Cycle of the Long Count reaches completion’.  To quote an expert on this issue, “Contrary to popular understanding, the ancient Meso-Americans, be they Maya or any other group, left no oral or written “prophecy” record about what would or could happen on or about the year 2012 other than a great age of 5125 years would end and another commence.”  But who would be interested in these prosaic facts in the face of such cataclysmic claims to both dazzle and frighten the vast majority of believers in apocalyptic stories?
 
        
 
        
Pralaya, the Great Deluge
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'''Pralaya, the Great Deluge'''
    
The concept of Pralaya (The 2012 event if it ever happens should qualify as a Mahapralaya),  loosely translated as ‘the great deluge’, essentially describes the terminal phase of the destruction of the Universe that is supposed to have taken place in the past and believed to take place in future according to Hindu mythology.  It is supposed to happen repetitively with a (very long) periodicity, interspersed with the (re)creation of the universe in a different garb.  This is often grotesquely (mis)interpreted as a gigantic volume of water rising up to great heights, rushing in ferociously, drowning out the entire earth, and making it extinct.  People who subscribe to such beliefs never ask themselves the question as to how this is physically possible when the volume of water in the seas is only a tiny fraction of the overall volume of the earth.  As so often happens, this is the result of a totally unwarranted literal interpretation of any mythological event or episode.  Indeed it would be a great disservice to subject these wonderfully evocative works of mythology and literature to drab literal interpretations.
 
The concept of Pralaya (The 2012 event if it ever happens should qualify as a Mahapralaya),  loosely translated as ‘the great deluge’, essentially describes the terminal phase of the destruction of the Universe that is supposed to have taken place in the past and believed to take place in future according to Hindu mythology.  It is supposed to happen repetitively with a (very long) periodicity, interspersed with the (re)creation of the universe in a different garb.  This is often grotesquely (mis)interpreted as a gigantic volume of water rising up to great heights, rushing in ferociously, drowning out the entire earth, and making it extinct.  People who subscribe to such beliefs never ask themselves the question as to how this is physically possible when the volume of water in the seas is only a tiny fraction of the overall volume of the earth.  As so often happens, this is the result of a totally unwarranted literal interpretation of any mythological event or episode.  Indeed it would be a great disservice to subject these wonderfully evocative works of mythology and literature to drab literal interpretations.
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Many people argue that the great tsunami that caused such devastating destruction on 26th December 2004 in many parts of Asia, including large tracts of southern coastal India, is the harbinger of a much bigger one to come.  In any case, it would be as unpredictable as the last one and certainly cannot cause the end of the world!  Even the latest Fukushima earthquake-cum-tsunami disaster of last year doesn’t fit the bill, however terrible it was to the people of Japan.
 
Many people argue that the great tsunami that caused such devastating destruction on 26th December 2004 in many parts of Asia, including large tracts of southern coastal India, is the harbinger of a much bigger one to come.  In any case, it would be as unpredictable as the last one and certainly cannot cause the end of the world!  Even the latest Fukushima earthquake-cum-tsunami disaster of last year doesn’t fit the bill, however terrible it was to the people of Japan.
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Planetary Alignments
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'''Planetary Alignments'''
    
While the Mayan calendar is a one-off phenomenon, the so called ‘planetary alignments’ have come in handy quite frequently for the doomsayers, especially astrologers.  The last two such ‘alignments’ that were supposed to produce cataclysmic effects on the earth were in 1987 and 2000 respectively, but fizzled out like exploding crackers on a rainy night during Diwali fireworks.  The term alignment itself is a total misnomer when applied to a planetary system; anybody can conveniently mean anything by this.  In 2012, there is no planetary alignment of any significance fitting any description whatever.
 
While the Mayan calendar is a one-off phenomenon, the so called ‘planetary alignments’ have come in handy quite frequently for the doomsayers, especially astrologers.  The last two such ‘alignments’ that were supposed to produce cataclysmic effects on the earth were in 1987 and 2000 respectively, but fizzled out like exploding crackers on a rainy night during Diwali fireworks.  The term alignment itself is a total misnomer when applied to a planetary system; anybody can conveniently mean anything by this.  In 2012, there is no planetary alignment of any significance fitting any description whatever.
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One oft quoted claim is; ‘…during this time the two biggest planets in our solar system, Saturn and Jupiter, will be in line with each other.  The gravitational effects of the two planets on the Sun will cause it to wobble during it’s pole shift.’  This is such utter nonsense that any schoolboy should see through it.  For one thing, any two objects can be in line with each other, Saturn and Jupiter cannot cause any wobble on the Sun any time in any configuration and, lastly, the Sun doesn’t even have clearly definable poles like a planet, let alone be subject to ‘pole shifts’.  Another implication that only certain specific planetary alignments cause cataclysmic earthquakes is equally absurd.
 
One oft quoted claim is; ‘…during this time the two biggest planets in our solar system, Saturn and Jupiter, will be in line with each other.  The gravitational effects of the two planets on the Sun will cause it to wobble during it’s pole shift.’  This is such utter nonsense that any schoolboy should see through it.  For one thing, any two objects can be in line with each other, Saturn and Jupiter cannot cause any wobble on the Sun any time in any configuration and, lastly, the Sun doesn’t even have clearly definable poles like a planet, let alone be subject to ‘pole shifts’.  Another implication that only certain specific planetary alignments cause cataclysmic earthquakes is equally absurd.
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Magnetic Pole Shift
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'''Magnetic Pole Shift'''
    
The fact that complex geophysical processes in the interior of the earth do give rise to a reversal of the (north and south) magnetic poles of the earth is well documented and satisfactorily explained, but to say that this causes catastrophic consequences to the earth is absurd in the extreme.  Such a pole shift takes thousands of years to take place and cannot happen within a matter of days or months as envisaged by the doomsayers.
 
The fact that complex geophysical processes in the interior of the earth do give rise to a reversal of the (north and south) magnetic poles of the earth is well documented and satisfactorily explained, but to say that this causes catastrophic consequences to the earth is absurd in the extreme.  Such a pole shift takes thousands of years to take place and cannot happen within a matter of days or months as envisaged by the doomsayers.
 
   
 
   
Rotational Pole Shift
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'''Rotational Pole Shift'''
    
An even more absurd suggestion is that the geographical poles of the earth shift substantially or even undergo a reversal, amounting to a corresponding change in the axis of rotation of the earth, causing cataclysmic changes to the planet.  Apart from the question of why this should happen, what is overlooked is the gargantuan amounts of external energy required to achieve anything like this and the source of this energy.
 
An even more absurd suggestion is that the geographical poles of the earth shift substantially or even undergo a reversal, amounting to a corresponding change in the axis of rotation of the earth, causing cataclysmic changes to the planet.  Apart from the question of why this should happen, what is overlooked is the gargantuan amounts of external energy required to achieve anything like this and the source of this energy.
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Galactic Alignment
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'''Galactic Alignment'''
    
There are different variants of the ‘galactic alignment’ proposition one of which is that the solar system passes through the galactic plane this month (In actual fact it is moving away from, not towards, the galactic plane and the next crossing is due in about 30 million years from now; also, the last such ‘alignment’ was about 3 million years ago – both long spans of time even by astronomical standards!).  All these are equally ridiculous and meaningless in astronomical terms and merely represent, at best, an inconsistent use or deliberate misuse of high sounding astronomical terminology.  The distances involved are so immensely greater than interplanetary distances that no astrophysical processes of any kind can have any impact on earth which is but one insignificant speck in the vast, incredibly empty, interstellar space even if this space is only intra galactic.
 
There are different variants of the ‘galactic alignment’ proposition one of which is that the solar system passes through the galactic plane this month (In actual fact it is moving away from, not towards, the galactic plane and the next crossing is due in about 30 million years from now; also, the last such ‘alignment’ was about 3 million years ago – both long spans of time even by astronomical standards!).  All these are equally ridiculous and meaningless in astronomical terms and merely represent, at best, an inconsistent use or deliberate misuse of high sounding astronomical terminology.  The distances involved are so immensely greater than interplanetary distances that no astrophysical processes of any kind can have any impact on earth which is but one insignificant speck in the vast, incredibly empty, interstellar space even if this space is only intra galactic.
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Natural Disasters
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'''Natural Disasters'''
    
Natural and generally unpredictable disasters like earthquakes, typhoons/tornados/cyclones, and the more infrequent tsunamis, etc., cannot possibly spell the end of the world even if they all occur simultaneously at their destructive worst.  Despite the large scale localized disaster they often lead to, they are little more than pinpricks to the earth as a whole.  However, if anyone is caught in an event like this on the projected doomsday, it may certainly spell the end of the world for him, but it would be a far cry from being the end of the world for humanity as a whole.
 
Natural and generally unpredictable disasters like earthquakes, typhoons/tornados/cyclones, and the more infrequent tsunamis, etc., cannot possibly spell the end of the world even if they all occur simultaneously at their destructive worst.  Despite the large scale localized disaster they often lead to, they are little more than pinpricks to the earth as a whole.  However, if anyone is caught in an event like this on the projected doomsday, it may certainly spell the end of the world for him, but it would be a far cry from being the end of the world for humanity as a whole.
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Black Hole
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'''Black Hole'''
    
Black holes in space, be they ‘ordinary’ ones or supermassive galactic nuclei, are among the most bizarre objects known to astrophysics.  Gravitationally they are so strong that they can attract and swallow up any object that gets close to it.  No wonder some of the doomsday scenarios are associated with them.  Their proponents envisage collisions of black holes in and around 2012 resulting in the ‘ejection of massive gravity radiation creating imbalance in our entire galaxy…’ with the hapless earth naturally swallowed up in the process!  As to why these black holes should collide with each other is anybody’s guess.
 
Black holes in space, be they ‘ordinary’ ones or supermassive galactic nuclei, are among the most bizarre objects known to astrophysics.  Gravitationally they are so strong that they can attract and swallow up any object that gets close to it.  No wonder some of the doomsday scenarios are associated with them.  Their proponents envisage collisions of black holes in and around 2012 resulting in the ‘ejection of massive gravity radiation creating imbalance in our entire galaxy…’ with the hapless earth naturally swallowed up in the process!  As to why these black holes should collide with each other is anybody’s guess.
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Another black hole scary scene was conceived around the Large Hadron Collider (LHC), the gargantuan particle collider near Geneva in Europe which was prominently in the news earlier this year for the discovery of the famous Higgs boson [See my earlier blog post: 52) The Exasperating God Particle – Missing piece in a cosmic jigsaw puzzle (Jul 12)].  The rumor mills ground up a doomsday scenario in which the LHC would go berserk and produce a mini or micro black hole that would swallow up the entire earth!  Of course the LHC is incapable of anything so fanciful.
 
Another black hole scary scene was conceived around the Large Hadron Collider (LHC), the gargantuan particle collider near Geneva in Europe which was prominently in the news earlier this year for the discovery of the famous Higgs boson [See my earlier blog post: 52) The Exasperating God Particle – Missing piece in a cosmic jigsaw puzzle (Jul 12)].  The rumor mills ground up a doomsday scenario in which the LHC would go berserk and produce a mini or micro black hole that would swallow up the entire earth!  Of course the LHC is incapable of anything so fanciful.
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Colliding Extraterrestrial Bodies
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'''Colliding Extraterrestrial Bodies'''
    
The doomsayers need nothing as exotic as black holes to finish off the earth.  More mundane things like colliding extraterrestrial objects should suffice.  A host of such objects in near-earth space are supposed to be on course to collide with the earth and any one of them should be able to complete the job!  Chief among them is the mythical ‘twelfth planet Nibiru’ that has a long history and hallowed presence on the doomsday stage.  So is the so called planet X.  At the very least, a stray asteroid or comet is considered sufficient for the job.  Needless to say, they exist only in the minds of dedicated hoaxers with a fertile imagination, capable of capturing the attention of the gullible who are prepared to believe anything but the hard truth that no extraterrestrial object heading towards the earth, however elusive, can go undetected years or even decades in advance with the modern tools and techniques of astronomy.
 
The doomsayers need nothing as exotic as black holes to finish off the earth.  More mundane things like colliding extraterrestrial objects should suffice.  A host of such objects in near-earth space are supposed to be on course to collide with the earth and any one of them should be able to complete the job!  Chief among them is the mythical ‘twelfth planet Nibiru’ that has a long history and hallowed presence on the doomsday stage.  So is the so called planet X.  At the very least, a stray asteroid or comet is considered sufficient for the job.  Needless to say, they exist only in the minds of dedicated hoaxers with a fertile imagination, capable of capturing the attention of the gullible who are prepared to believe anything but the hard truth that no extraterrestrial object heading towards the earth, however elusive, can go undetected years or even decades in advance with the modern tools and techniques of astronomy.
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Supernova
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'''Supernova'''
    
Yet another disaster scenario is that the earth will be wiped out by a supernova suddenly erupting nearby.  The ‘ripe’ candidate for such an event is the red supergiant star Betelgeuse that is about 640 light years from the earth in the Orion constellation.  Before this happens we could expect to see the appearance of a ‘second Sun’ in the sky, a phenomenon that is so popular with doomsday hoaxers that it has now become something of an annual event.  It ignores the astrophysical fact that there is no reliable way of predicting how red giant stars behave at the end of their life cycles.  Betelgeuse poses no conceivable threat to humanity now or indeed within the next million years.
 
Yet another disaster scenario is that the earth will be wiped out by a supernova suddenly erupting nearby.  The ‘ripe’ candidate for such an event is the red supergiant star Betelgeuse that is about 640 light years from the earth in the Orion constellation.  Before this happens we could expect to see the appearance of a ‘second Sun’ in the sky, a phenomenon that is so popular with doomsday hoaxers that it has now become something of an annual event.  It ignores the astrophysical fact that there is no reliable way of predicting how red giant stars behave at the end of their life cycles.  Betelgeuse poses no conceivable threat to humanity now or indeed within the next million years.
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2012 the Movie
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'''2012 the Movie'''
    
Hollywood has always had a fascination for sci-fi disaster movies where the imagination runs riot and rationality of any kind is the worst casualty.  Much of the 2012 doomsday myth has been fuelled by one such movie, the 2009 production simply titled ‘2012’, perhaps distinguished for its high technical quality, but little else.  It was successful in stirring up a frenzy of fear among the viewers that has continued to this day.  Only the end of the world next week or the end of calendar year 2012 should bring any relief from its pernicious influence.
 
Hollywood has always had a fascination for sci-fi disaster movies where the imagination runs riot and rationality of any kind is the worst casualty.  Much of the 2012 doomsday myth has been fuelled by one such movie, the 2009 production simply titled ‘2012’, perhaps distinguished for its high technical quality, but little else.  It was successful in stirring up a frenzy of fear among the viewers that has continued to this day.  Only the end of the world next week or the end of calendar year 2012 should bring any relief from its pernicious influence.
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Real-world Consequences
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'''Real-world Consequences'''
    
The doomsday predictions are not just harmless pranks by any means and have already had some grave real-world consequences.  People who take these seriously (there are lots of people who do so all over the world) have been leading frightened and tortured lives, often rationalizing that it is better to end their own lives before the earth comes to its predicted end.  Indeed there have been numerous instances of people, especially young and innocent children, actually carrying this out.  
 
The doomsday predictions are not just harmless pranks by any means and have already had some grave real-world consequences.  People who take these seriously (there are lots of people who do so all over the world) have been leading frightened and tortured lives, often rationalizing that it is better to end their own lives before the earth comes to its predicted end.  Indeed there have been numerous instances of people, especially young and innocent children, actually carrying this out.  
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I have been approached on numerous occasions over the last 2-3 years (ever since the disaster movie ‘2012’ made a splash) by people of all strata in society asking me what I had to say about these dire doomsday warnings.  Most of them have not been convinced by my dismissive attitude to their apprehensions.  They seek a scientifically reasoned response from me and when I say that there is little or no science behind any of the claims they feel let down.  However, I have had better success with groups of students whenever I have addressed them on these issues.  
 
I have been approached on numerous occasions over the last 2-3 years (ever since the disaster movie ‘2012’ made a splash) by people of all strata in society asking me what I had to say about these dire doomsday warnings.  Most of them have not been convinced by my dismissive attitude to their apprehensions.  They seek a scientifically reasoned response from me and when I say that there is little or no science behind any of the claims they feel let down.  However, I have had better success with groups of students whenever I have addressed them on these issues.  
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Media Madness
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'''Media Madness'''
    
As usual, both the printed and electronic media have played their part in spreading and perpetuating the irrational, the pseudoscientific and the grossly unscientific and cashed in heavily on the present doomsday myth.  A routine Google search of the internet will throw up huge amounts of supportive information on every nonsensical claim that is doing the rounds.  Most TV channels and their presenters not only report them dutifully without batting an eyelid, but also hold lengthy discussion sessions with assorted ‘experts’, including the ubiquitous and indispensable astrologer.  Every doomsday scenario is dissected threadbare and discussed as seriously as the latest political crisis or economic scam in the country.  Often they do let sane voices speak up, but somewhat patronizingly and only to project the ‘other’ side of the story.
 
As usual, both the printed and electronic media have played their part in spreading and perpetuating the irrational, the pseudoscientific and the grossly unscientific and cashed in heavily on the present doomsday myth.  A routine Google search of the internet will throw up huge amounts of supportive information on every nonsensical claim that is doing the rounds.  Most TV channels and their presenters not only report them dutifully without batting an eyelid, but also hold lengthy discussion sessions with assorted ‘experts’, including the ubiquitous and indispensable astrologer.  Every doomsday scenario is dissected threadbare and discussed as seriously as the latest political crisis or economic scam in the country.  Often they do let sane voices speak up, but somewhat patronizingly and only to project the ‘other’ side of the story.
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The role of the once respected History (TV) Channel is particularly disturbing.  Recently it has degenerated and “become a place where various doomsday scenarios are presented, looking like documentaries, and giving the impression that the science behind these shows is well-accepted.  In reality these shows are apparently nothing more than vehicles for book sales for the various authors and ‘independent researchers’ that the History Channel has chosen as their Prophets of Doom.”
 
The role of the once respected History (TV) Channel is particularly disturbing.  Recently it has degenerated and “become a place where various doomsday scenarios are presented, looking like documentaries, and giving the impression that the science behind these shows is well-accepted.  In reality these shows are apparently nothing more than vehicles for book sales for the various authors and ‘independent researchers’ that the History Channel has chosen as their Prophets of Doom.”
   −
Weird Beliefs
+
'''Weird Beliefs'''
    
Why do people believe in such outrageously nonsensical doomsday scenarios even to the point of being skeptical about perfectly rational arguments and scientific evidence to the contrary?  It is a rather complex question requiring a deep psychological study of human behavior.  To some extent the answer can be found in “Why People Believe Weird Things: Pseudoscience, Superstition, and Other Confusions of Our Time”, a famous book by Michael Shermer, who is the founding publisher and editor-in-chief of Skeptic magazine (see: www.skeptic.com) and the director of The Skeptics Society.  It is essentially a survey of a range of irrational human behaviors, with an analysis of their empirical and logical flaws.  It delves into the difference between science and pseudo-science supported by numerous examples from everyday life.  The present doomsday scare represents an excellent example.
 
Why do people believe in such outrageously nonsensical doomsday scenarios even to the point of being skeptical about perfectly rational arguments and scientific evidence to the contrary?  It is a rather complex question requiring a deep psychological study of human behavior.  To some extent the answer can be found in “Why People Believe Weird Things: Pseudoscience, Superstition, and Other Confusions of Our Time”, a famous book by Michael Shermer, who is the founding publisher and editor-in-chief of Skeptic magazine (see: www.skeptic.com) and the director of The Skeptics Society.  It is essentially a survey of a range of irrational human behaviors, with an analysis of their empirical and logical flaws.  It delves into the difference between science and pseudo-science supported by numerous examples from everyday life.  The present doomsday scare represents an excellent example.
   −
Epilogue
+
'''Epilogue'''
    
It must be admitted that the doomsday phenomenon is more of a western malady, with people in countries like India showing a surprising degree of intellectual maturity.  In recent months, some religious leaders in India have started discounting the widely publicized doomsday claims and trying to allay popular fears.  Even astrologers have started singing a more restrained tune.  Faced with the prospect of yet another fiasco with their public utterances, they are distancing themselves from the Mayan calendar, truthfully claiming that it is not in consonance with their own.  They are now pushing themselves into the background, content with providing ‘private consultations’ at a vastly expanded scale to disturbed clients who have started flocking to them in rapidly increasing numbers.  It looks like they will have their cake and eat it too.  It should be a lot easier to secure an appointment with a noted brain specialist than with one of these worthies.
 
It must be admitted that the doomsday phenomenon is more of a western malady, with people in countries like India showing a surprising degree of intellectual maturity.  In recent months, some religious leaders in India have started discounting the widely publicized doomsday claims and trying to allay popular fears.  Even astrologers have started singing a more restrained tune.  Faced with the prospect of yet another fiasco with their public utterances, they are distancing themselves from the Mayan calendar, truthfully claiming that it is not in consonance with their own.  They are now pushing themselves into the background, content with providing ‘private consultations’ at a vastly expanded scale to disturbed clients who have started flocking to them in rapidly increasing numbers.  It looks like they will have their cake and eat it too.  It should be a lot easier to secure an appointment with a noted brain specialist than with one of these worthies.
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On that fateful day exactly a week from now, I am due to visit an educational institution not far from Kanyakumari, the southernmost tip of the subcontinent that was ravaged during the tsunami of 26th December 2004.  I have been warned not to go too close to the sea that day lest I be washed away by a much more devastating tsunami, indeed a pralaya, which someone I know very well thinks is bound to happen that day!  I shall certainly heed the warning if only because I won’t have the time to go near the sea that day.
 
On that fateful day exactly a week from now, I am due to visit an educational institution not far from Kanyakumari, the southernmost tip of the subcontinent that was ravaged during the tsunami of 26th December 2004.  I have been warned not to go too close to the sea that day lest I be washed away by a much more devastating tsunami, indeed a pralaya, which someone I know very well thinks is bound to happen that day!  I shall certainly heed the warning if only because I won’t have the time to go near the sea that day.
   −
Postscript
+
'''Postscript'''
    
I have just received reliable information that, due to unavoidable reasons, the End of the World has been postponed!  The revised date is yet to be announced!
 
I have just received reliable information that, due to unavoidable reasons, the End of the World has been postponed!  The revised date is yet to be announced!
   −
=== Yet Another Confession of a Science Teacher ===
+
== Yet Another Confession of a Science Teacher - N J Krishnan ==
 
+
'''About the author'''
 
N. J. Krishnan is a former Head Master of The Valley School and a teacher of Physics and Mathematics. He also established and headed the Teacher Resource Centre in The Valley School.<br>
 
N. J. Krishnan is a former Head Master of The Valley School and a teacher of Physics and Mathematics. He also established and headed the Teacher Resource Centre in The Valley School.<br>
''This article was published in the KFI Journal - Jun 2008, Issue 12''
+
This article was published in the KFI Journal - Jun 2008, Issue 12<br><br>
    
I am sure all of us have had occasions when we have felt a sense of dissatisfaction; days when we wonder why we are doing what we are doing, days when we wonder whether it is any use at all, whether teachers have anything to do with the learning of the child. Maybe, we wonder, there is no point in what we do; maybe one is better off doing something else. Fortunately, for me at least, this does not happen often.
 
I am sure all of us have had occasions when we have felt a sense of dissatisfaction; days when we wonder why we are doing what we are doing, days when we wonder whether it is any use at all, whether teachers have anything to do with the learning of the child. Maybe, we wonder, there is no point in what we do; maybe one is better off doing something else. Fortunately, for me at least, this does not happen often.
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The third possibility: give the visitor space to look around; point out some of the interesting aspects, suggest the interesting lanes and by-lanes she can take to explore the edifice — preferably by herself. Give her the time and space to do so, but also provide her with the certainty that you are available when she needs you. Be with her when she needs you; let her loose when she does not. In this lies the possibility of true involvement and understanding.
 
The third possibility: give the visitor space to look around; point out some of the interesting aspects, suggest the interesting lanes and by-lanes she can take to explore the edifice — preferably by herself. Give her the time and space to do so, but also provide her with the certainty that you are available when she needs you. Be with her when she needs you; let her loose when she does not. In this lies the possibility of true involvement and understanding.
   −
=== What is the role of a science teacher ===
+
== What is the role of a science teacher - Ranjani Ranganathan ==
 +
'''About the author'''
   −
'''Ranjani Ranganathan is a science and mathematics teacher and works with IT for Change.<br>'''
+
Ranjani Ranganathan is a science and mathematics teacher and works with IT for Change.<br>
    
“Choice of subjects to teach is not entirely involuntary in this school,” joked the veteran Physics teacher.  We were discussing the possibility of my moving to High School to teach Physics and Math.  Let it be known that I was formally trained to teach junior school and primary school children. <br><br>
 
“Choice of subjects to teach is not entirely involuntary in this school,” joked the veteran Physics teacher.  We were discussing the possibility of my moving to High School to teach Physics and Math.  Let it be known that I was formally trained to teach junior school and primary school children. <br><br>
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Lest I sound like I have given up on teaching Physics in school, I must hasten to add this.  How the teacher presents science in school has a direct effect on how the student views the subject later on.  This is true, I am sure, of other subjects as well, but is critical for science and math.  What matters is the teacher’s attitude and approach to learning and teaching.  Of course, at least part of this statement is motivated by self-preservation interests.  Regardless, I do think qualifications are not the only things that matter.  And if I have done my job well, at least some of my students may revisit Physics later in life and grapple with concepts that they thought they had understood!<br><br>
 
Lest I sound like I have given up on teaching Physics in school, I must hasten to add this.  How the teacher presents science in school has a direct effect on how the student views the subject later on.  This is true, I am sure, of other subjects as well, but is critical for science and math.  What matters is the teacher’s attitude and approach to learning and teaching.  Of course, at least part of this statement is motivated by self-preservation interests.  Regardless, I do think qualifications are not the only things that matter.  And if I have done my job well, at least some of my students may revisit Physics later in life and grapple with concepts that they thought they had understood!<br><br>
 
So, you think I have got it all figured out? You wish.  I am supposed to teach Class 11 Physics next year.  It is de ja vu all over again…..
 
So, you think I have got it all figured out? You wish.  I am supposed to teach Class 11 Physics next year.  It is de ja vu all over again…..
 +
 +
=ಕನ್ನಡ ಮಾಧ್ಯಮದಲ್ಲಿ ವಿಜ್ಞಾನ ಪಠ್ಯಪುಸ್ತಕಗಳಲ್ಲಿನ ಪದಗಳ ಬಳಕೆಯ ಒಂದು ನೋಟ=
 +
ಪ್ರಸ್ತುತ ಜಗತ್ತಿನಲ್ಲಿ ವಿಜ್ಞಾನ ವಿಷಯದ ಜ್ಞಾನ ಪ್ರತಿಯೊಬ್ಬರಿಗೂ ಅತ್ಯವಶ್ಯವಾಗಿದೆ, ಹಾಗಾಗಿ  ಪ್ರತಿಯೊಬ್ಬ ವ್ಯಕ್ತಿ ಸಹ ಇದರ ಬಗ್ಗೆ ಯೋಚನೆ ಮಾಡಲೇಬೇಕು .
 +
ಇಂತಹ ಒಂದು ಅಧ್ಯಯನವನ್ನು ಪ್ರಶಾಂತ ಸೊರಟೂರ ಇವರ ತಂಡ ಈಗಾಗಲೇ ನಡೆಸಿದ್ದು ಅದರಲ್ಲಿ 2014-15ನೇ ಸಾಲಿನ ಕರ್ನಾಟಕ ರಾಜ್ಯದ 5, 8,ಮತ್ತು 10 ನೇ ತರಗತಿಯ ವಿಜ್ಞಾನ ಪಠ್ಯಪುಸ್ತಕಗಳಲ್ಲಿರುವ ಕೆಲವು ಪದಗಳನ್ನು  ವಿಮರ್ಶಿಸಿ ಸುಮಾರು 827 ಪದಗಳನ್ನು ಪಟ್ಟಿ ಮಾಡಲಾಗಿದೆ . ಇದರಲ್ಲಿ ಕೇವಲ 275 ಮಾತ್ರ ತಿಳಿದ ಕನ್ನಡ ಭಾಷೆಯ ಪದಗಳಾಗಿವೆ. ಇನ್ನು ಉಳಿದಿರುವ 552 ಪದಗಳು ತಿಳಿಯದ ಪದಗಳಾಗಿವೆ .  ಈ ಅಧ್ಯಯನದ ಅಂಶಗಳನ್ನು ಆಧರಿಸಿ ನಮ್ಮ ಐ.ಟಿ.ಎಫ್.ಸಿ ಸಂಸ್ಥೆಯಲ್ಲಿ  ಪ್ರಸ್ತುತಿಯ (Presentation) ಮೂಲಕ ಚರ್ಚೆ ಮಾಡಲಾಯಿತು . <br>
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ಈ ಅಧ್ಯಯನದಲ್ಲಿರುವ ಅಂಶಗಳು :<br>
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* ಪ್ರಸ್ತುತ ವಿಜ್ಞಾನ ಪಠ್ಯಪುಸ್ತಕದಲ್ಲಿರುವ ಬೇರೆ ನುಡಿಯ (ಇಂಗ್ಲ್ಲೀಷ ಮತ್ತು ಸಂಸ್ಕ್ತೃತ) ಪದಗಳು
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* ಬೇರೆ ನುಡಿಯ ಪದಗಳ ಬದಲಿಗೆ ಬಳಸಬಹುದಾದಂತಹ ಆಡುನುಡಿಯ ಸಾಟಿ ಪದಗಳು
 +
* ಆಡುನುಡಿಯಲ್ಲಿ ಸಾಟಿ ಪದಗಳನ್ನು ಕಟ್ಟುವ ಬಗ್ಗೆ .
 +
 +
ಒಂದು ಉದಾಹರಣೆ : <br>
 +
ದಾಸವಾಳ ಹೂವಿನ ಭಾಗಗಳನ್ನು ಗುರ್ತಿಸುವ ಚಿತ್ರ .
 +
ಸಂಸ್ಕೃತ ಪದ ಮತ್ತು ಕನ್ನಡ ಮೂಲ ಪದಗಳು . <br><br>
 +
[[File:Hibuscuss in book 1.jpg|400px]][[File:Hibuscuss modify 2.jpg|400px]]
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 +
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ನಮ್ಮ ಚರ್ಚೆಯಿಂದ ಬಂದ ಅಂಶಗಳು: <br>
 +
* ಈ ಅಧ್ಯಯನಕ್ಕೆ ಯಾವ ಪ್ರದೇಶದ ಮಕ್ಕಳನ್ನು ಗಮನದಲ್ಲಿ ಇಟ್ಟುಕೊಳ್ಳಲಾಗಿದೆ ಎಂಬ ಪ್ರಶ್ನೆ ಮೂಡಿ ಬಂತು.
 +
* ತಿಳಿದ ಪದಗಳು ಮತ್ತು ತಿಳಿಯದ ಪದಗಳನ್ನು ಯಾವ ಅಧಾರದ ಮೇಲೆ  ವಿಂಗಡಣೆ ಮಾಡಿಲಾಯಿತು (ಪ್ರದೇಶದಿಂದ ಪ್ರದೇಶಕ್ಕೆ ಪದಗಳ ಬಳೆಕೆ ವ್ಯತ್ಯಾಸವಿರುತ್ತದೆ) ಎಂಬುವುದರ ಬಗ್ಗೆ ಗೊಂದಲಮಯವಾಯಿತು.
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* ಪದ ವಿಂಗಡಣೆ ನಕ್ಷೆಯಲ್ಲಿ ತೋರಿಸಿದಂತೆ ತಿಳಿಸಿರುವ ಶೇಕಡವಾರು ಫಲಿತಾಂಶವು ವ್ಯತ್ಯಾಸವಾಗಿದೆ (ತಿಳಿದ ಕನ್ನಡ ಪದಗಳು ಮತ್ತು ತಿಳಿದ ಬೇರೆ ನುಡಿಯ ಪದಗಳು ಅದಲಿ ಬದಲಿ ಆಗಬೇಕು).
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'''೧೦ ನೇ ತರಗತಿಯಲ್ಲಿ ಬರುವ - ಉಷ್ಣ ಇಂಜಿನ ಪಾಠದಲ್ಲಿ ಬಂದಿರುವ ಕೆಲವು ಪದಗಳು''' <br>
 +
[[File:padagala balake normal.png|400px]]<br>
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ಬಳಸಬಹುದಾದಂತಹ ಸಾಟಿ ಪದಗಳಲ್ಲಿ ನೀಡಿರುವ ಕೆಲವು ಪದಗಳು ಮತ್ತೆ ಗೊಂದಲವನ್ನು ಸೃಷ್ಟಿಸಿದೆ ಅಂತಹ ಕೆಲವು ಪದಗಳು ಈ ಕೆಳಕಂಡಂತಿವೆ . <br>
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[[File:diff padagal balake.png|400px]]<br>
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ಒಟ್ಟಾರೆ ಅಧ್ಯಯನದಲ್ಲಿ ಪಟ್ಟಿ ಮಾಡಿರುವ ಪದಗಳ ಪುನರಾವಲೋಕನದ ಅವಶ್ಯಕತೆ ಇದೆ ಎಂಬ ಅನಿಸಿಕೆ ವ್ಯಕ್ತವಾಯಿತು . ನಿಮ್ಮ ಅನಿಸಿಕೆಗಳನ್ನು ಹಂಚಿಕೊಳ್ಳಿ .<br><br><br>
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'''ಸಂಪೂರ್ಣವಾದ ಅಧ್ಯಯನದ ಪ್ರತಿಯನ್ನು ವೀಕ್ಷಿಸಿಸಲು ಮತ್ತು ಡೌನ್‌ಲೋಡ್‌ ಮಾಡಿಕೊಳ್ಳಲು '''  <br>
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{{#widget:Iframe |url=http://www.slideshare.net/slideshow/embed_code/61227564" |width=450 |height=360 |border=1 }}
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'''ನಮ್ಮ ಕಚೇರಿಯಲ್ಲಿ ಪ್ರಸ್ತುತಪಡಿಸಲಾದ ಪ್ರಸ್ತುತಿಯನ್ನು ವೀಕ್ಷಿಸಿಸಲು ಮತ್ತು ಡೌನ್‌ಲೋಡ್‌ ಮಾಡಿಕೊಳ್ಳಲು'''<br>
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{{#widget:Iframe |url=http://www.slideshare.net/slideshow/embed_code/61229680" |width=450 |height=360 |border=1 }}

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