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Portal:Mathematics
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~~[[File:phone~~-~~number-keypad~~.~~jpg|150px]]~~+~~'''YOUR PHONE NUMBER WILL REVEAL YOUR AGE'''~~
−~~Your Phone number will reveal your actual Age. It will take about 15 seconds,read and do it at the same time so that you will not lose the fun.~~
−~~#Take a look at your last digit of your cell phone number~~
−~~#Use this figure and multiply by 2~~
−~~#Then add 5~~
−~~#And then multiply by 50~~
−~~#And then add the number 1765~~
−~~#The last step; with this number, subtract your birth year.~~
−
−~~Now you see a three-digit number. The first digit is the last digit of your phone number, the next two digits are your actual age! You can use the attached [http://karnatakaeducation.org.in/KOER/en/images/1/17/Phone_number_birthday_puzzle.ods spreadsheet] to solve this and find out why it works!!~~
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−~~[http://karnatakaeducation.org.in/KOER/en/index.php/Mathematics_fun_corner#Maths_Quizzes '''Maths Quizzes''']~~
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−~~[http://karnatakaeducation.org.in/KOER/en/index.php/Mathematics_fun_corner#The_origin_of_the_calendar '''The origin of the calendar''']~~
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−~~[http://karnatakaeducation.org.in/KOER/en/index.php/Mathematics_fun_corner#Magic_Square '''Magic Square''']~~
~~==Classroom resources==~~
−~~[[File:Maths~~-~~resource-image.png|left|100px]] Find here mind maps, ~~activities~~, video and multimedia resources ~~for ~~science lessons in Class 9~~.~~The resources have been developed to help build conceptual understanding and have been arranged according to the chapters in the textbook. ~~
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−~~'''Mathematics foundational materials please [http://karnatakaeducation.org.in/KOER/en/index.php/Foundational_mathematics Click here]'''~~
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−~~'''For typing formula on KOER, please''' [http://karnatakaeducation.org.in/KOER/en/index.php/Math_Formula_on_Wiki '''click here''']~~.
−~~'''For Question papers and CCE activities please''' ~~[http://~~karnatakaeducation~~.~~org~~.~~in~~/~~KOER~~/~~en/index.php/Maths:_Question_Papers '''click here''']~~+
−~~'''For solved problems please''' [http://karnatakaeducation.org~~.in~~/KOER/en/index.php/Mathematics_Solved_problems '''click here'''~~]
−
−~~'''For additional resources and teaching ~~activities ~~click below''':~~
−~~# [http://karnatakaeducation.org.in/KOER/en/index.php/Permutations_And_Combinations Permutations and Combinations]~~
−~~# [http://karnatakaeducation.org.in/KOER/en/index.php/Progressions Progressions]~~
−~~# [http://karnatakaeducation.org.in/KOER/en/index.php/Graphs_And_Polyhedra Graphs And Polyhedra]~~
−~~# [http://karnatakaeducation.org.in/KOER/en/index.php/Probability Probability]~~
−~~# [http://karnatakaeducation.org.in/KOER/en/index.php/Polynomials Polynomials]~~
−~~# [http://karnatakaeducation.org.in/KOER/en/index.php/Sets Sets]~~
−~~# [http://karnatakaeducation.org.in/KOER/en/index.php/Co-ordinate_geometry Activity ~~for ~~Co-ordinate Geometry]~~
−~~# [http://karnatakaeducation.org.in/KOER/en/index.php/Mensuration Mensuration]~~
−~~# [http://karnatakaeducation.org.in/KOER/en/index.php/Trigonometry Trigonometry]~~
−~~# [http://karnatakaeducation.org.in/KOER/en/index.php/Simultaneous_Linear_Equations Simultaneous_Linear_Equations]~~
−~~# [http://karnatakaeducation.org.in/KOER/en/index.php/Triangles Triangles]~~
−~~# [http://karnatakaeducation.org.in/KOER/en/index.php/Congruence_of_triangles Congruence ~~of ~~Triangles]~~
−~~# [http://karnatakaeducation.org~~.in~~/KOER/en/index~~.~~php/Similar_and_congruent_triangles Similar Triangles]~~
−~~# [http://karnatakaeducation.org~~.~~in/KOER/en/index.php/Concurrency_in_triangles Concurrency in triangles]~~
−~~# [http://karnatakaeducation.org.in/KOER/en/index.php/Quadrilaterals Quadrilaterals]~~
−~~# [http://karnatakaeducation.org.in/KOER/en/index.php/Circles Circles]~~
−~~# [http://karnatakaeducation.org.in/KOER/en/index.php/Circles_and_lines Circles Chord Properties]~~
−~~# [http://karnatakaeducation.org.in/KOER/en/index.php/Circles_and_lines#Concept_.232.Secant_and_Tangent Circles Tangent Properties]~~
−
−~~[http://karnatakaeducation.org.in/KOER/en/index.php/Mathematics:_Topics More]~~
−

However, to appreciate the poetry of this language or to transact, one must learn the grammar and acquire the vocabulary. And school mathematics is largely about acquiring the skills to communicate and develop the love for the language. This portal is for students and teachers to engage with this language and build those skills. }}

However, to appreciate the poetry of this language or to transact, one must learn the grammar and acquire the vocabulary. And school mathematics is largely about acquiring the skills to communicate and develop the love for the language. This portal is for students and teachers to engage with this language and build those skills. }}

<div style="float:left; width:55%;"> <!-- This width adds to the margin below to equal 99%-->

<div style="float:left; width:55%;"> <!-- This width adds to the margin below to equal 99%-->

−{{Color-box|11|~~Fun Corner~~|~~[http://karnatakaeducation~~.~~org.in/KOER/en/index.php/Mathematics_fun_corner#Phone_number_birthday_puzzle '''Phone number birthday puzzle''']~~

+{{Color-box|11|Classroom resources|This section will feature resources for classroom teaching including online, digital and other hands-on activities.

−We will begin with Geometry - triangles and will be adding resources every week.

−}}

}}

{{Color-box|11|Famous Mathematicians|Here is a video on Srinivasa Ramanujam and his magic square shared by Sunitha Madam.<br>

{{Color-box|11|Famous Mathematicians|Here is a video on Srinivasa Ramanujam and his magic square shared by Sunitha Madam.<br>

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−{{Color-box|11|~~Topics~~|

+{{Color-box|11|Resources for hands-on activities|This is a collection of hands-on activities that can be used for Vidyagama program. Check regularly for updates.

−[http://www.arvindguptatoys.com/arvindgupta/rompinginnumberlandeng.pdf Romping in Numberland] is an extremely interesting book where you can find some simple activities for introducing the joy of numbers. This is a great resource for bridge course or even for students to explore numbers and will help them in their number skills and operations. Click here to download.}}

−}}

{{Color-box|11|From the forum|3='''Some interesting exchanges from the STF mailing forum.'''

{{Color-box|11|From the forum|3='''Some interesting exchanges from the STF mailing forum.'''