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| | For further details and derivation click [http://karnatakaeducation.org.in/KOER/en/index.php/Notes_on_Acceleration_due_to_gravity here]. | | For further details and derivation click [http://karnatakaeducation.org.in/KOER/en/index.php/Notes_on_Acceleration_due_to_gravity here]. |
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| − | ===Activity No #1 – Observe a freely falling body === | + | ===Activities=== |
| − | | + | #Activity #1 – Observe a freely falling body |
| − | {| style="height:10px; float:right; align:center;"
| + | #Activity #2 - Freely falling Object |
| − | |<div style="width:150px;border:none; border-radius:10px;box-shadow: 5px 5px 5px #888888; background:#f5f5f5; vertical-align:top; text-align:center; padding:5px;">
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| − | ''[http://karnatakaeducation.org.in/?q=node/305 Click to Comment]''</div>
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| − | |}
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| − | * '''Estimated Time''' - 30 minutes
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| − | * '''Materials/ Resources needed'''
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| − | * '''Prerequisites/Instructions, if any'''
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| − | #Good quality clock with high precision of measurement
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| − | #This experiment will be difficult to measure
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| − | * '''Multimedia resources'''
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| − | * '''Website interactives/ links/ simulations'''
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| − | * '''Process (How to do the activity)'''<br>
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| − | #Ask a child to drop a piece of chalk from terrace
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| − | #Start the stop clock as soon as the child drops it.
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| − | #Put off the clock as soon as the chalk touches the ground, note down the time taken
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| − | #Repeat the same expt with a stone,& calculate the time
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| − | | |
| − | * '''Developmental Questions (What discussion questions)'''
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| − | #What was the time taken?
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| − | #Was it the same?
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| − | #Why would it be so?
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| − | #Do the students relate it to the equations of motion they have studied?
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| − | | |
| − | '''Evaluation (Questions for assessment of the child)'''
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| − | | |
| − | * '''Question Corner'''
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| − | | |
| − | | |
| − | ===Activity No #2 - Freely falling Object===
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| − | | |
| − | {| style="height:10px; float:right; align:center;"
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| − | |<div style="width:150px;border:none; border-radius:10px;box-shadow: 5px 5px 5px #888888; background:#f5f5f5; vertical-align:top; text-align:center; padding:5px;">
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| − | ''[http://karnatakaeducation.org.in/?q=node/305 Click to Comment]''</div>
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| − | |}
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| − | * '''Estimated Time''' - 30 minutes
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| − | * '''Materials/ Resources needed''' - Projector
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| − | * '''Prerequisites/Instructions, if any'''
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| − | * '''Multimedia resources'''
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| − | {|class="wikitable"
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| − | |-
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| − | |Image:http://upload.wikimedia.org/wikipedia/commons/thumb/0/02/Falling_ball.jpg/100px-Falling_ball.jpg
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| − | |The image on the side, spanning half a second, was captured with a stroboscopic flash at 20 flashes per second. During the first 1⁄20 of a second the ball drops one unit of distance (here, a unit is about 12 mm); by 2⁄20 it has dropped at total of 4 units; by 3⁄20, 9 units and so on. Check [http://en.wikipedia.org/wiki/Equations_for_a_falling_body here] for a more detailed description.
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| − | |}
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| − | * '''Website interactives/ links/ simulations'''
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| − | * '''Process (How to do the activity)'''
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| − | #Project the picture for the class and discuss the following questions
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| − | * '''Developmental Questions (What discussion questions)'''
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| − | #Where is the ball at time = 0?
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| − | #In the first (1/20)th of a second, what is the distance travelled by ball?
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| − | #In the second (1/20)th of a second, what is the distance travelled by ball?
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| − | #How does the distance fallen increase with time?
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| − | #What can you say about the motion?
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| − | * '''Evaluation (Questions for assessment of the child)'''
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| − | * '''Question Corner'''
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| − | Will the ball also attract the Earth and produce an acceleration?
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| | ==Concept #2 - Weight== | | ==Concept #2 - Weight== |
