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From Karnataka Open Educational Resources
→Concept #2.Informal units of measurements
==Concept #2.Informal units of measurements ==
==Concept #2.Informal units of measurements ==
===Learning objectives===
===Learning objectives===
# The students understand that informal ways of measurements are a type of measure which uses non-standard units such as hand spans, armlengths, footsteps or pattern blocks to measure length, area, etc.
# They comprehend that estimate and informal measurement are interchangeable terms.
# They realise that informal measurements are not always the same but vary with the person involved in measuring.
===Notes for teachers===
===Notes for teachers===
===Activity No # ===
# The teacher can ask the students to gather information regarding earlier informal measuring ways from their elders and have an initial discussion in the classroom.
===Activity No # Estimating distances===
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''[http://www.karnatakaeducation.org.in/?q=node/305 Click to Comment]''</div>
''[http://www.karnatakaeducation.org.in/?q=node/305 Click to Comment]''</div>
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*Estimated Time
*Estimated Time :1 hour
*Materials/ Resources needed
*Materials/ Resources needed : Sticks,
*Prerequisites/Instructions, if any
*Prerequisites/Instructions, if any
*Multimedia resources
# The students should know ways of informal measurements.
# They should have ability to measure and document their findings accurately.
*Multimedia resources
*Website interactives/ links/ / Geogebra Applets
*Website interactives/ links/ / Geogebra Applets
*Process/ Developmental Questions
*Process:
# The teacher can ask the students to determine the distances of library, principal's room, playground, dining hall, entrance gate from their classroom using various informal measuring methods.
# The children can decide which method to use - whether foot, sticks or ropes.
# The task can be done in groups of 5 children.
# Document and compare the results.
# Discuss regarding the length of distance.
*Developmental Questions:
# Which point would we mark as the point of reference for measuring our classroom.
# Similarly what are the points of reference for other places.
# How do we mark them.
# Which measuring unit are you using ?
# How will you document the findings ?
# How can we tabulate our findings on board for comparisons ?
# What would be our report back time ?
# What are our findings ?
# What conclusions can we draw ?
*Evaluation:
*Evaluation:
# What have we learnt so far about measuring object?
# What have we learnt so far about measuring object?
# How can we measure curves?
# How can we measure curves?
# What are the problems with informal measuring units?
# What are the problems with informal measuring units?
===Activity No # ===
===Activity No # ===
