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From Karnataka Open Educational Resources
Series of Activities on Number Systems (view source)
Revision as of 18:24, 28 January 2013
, 18:24, 28 January 2013→Hopping on the Number Line
#Does this give us the answer to the problem? <br>
#Does this give us the answer to the problem? <br>
#Did we add or subtract to find the answer? <br><br>
#Did we add or subtract to find the answer? <br><br>
Activity2 for Sum and product of numbers
'''Activity2 - Sum and product of numbers'''<br>
'''Objectives'''
#Using the number line model to find sum and products <br>
#Solving and creating puzzles using the number line <br>
#Investigating the order property of addition and multiplication <br>
'''Materials'''<br>
Materials
Counters for the number line (chips, markers, etc.) <br>
Counters for the number line (chips, markers, etc.)
'''How to do the activity(addition)'''<br>
Tell the students that they will find sums using the number line model. Then display a large number line and a 5+4 pencils , that is, a pencil with 5 spots on the left side and 4 spots on the right. Then demonstrate with a counter how a hop of 5 is taken on the number line. You may wish to encourage students to count aloud as the hop is made. Then make a hop of 4, starting at the place the counter landed. You might choose to have them record what happened using the equation notation 5 + 4 = 9, or to informally describe the moves this way: “If you take a hop of 5 spaces and then a hop of 4 spaces, you land on 9.” You may wish to highlight the fact that in this model, spaces are counted, not points on the number line.
Tell the students that they will find sums using the number line model. Then display a large number line and a 5+4 pencils , that is, a pencil with 5 spots on the left side and 4 spots on the right. Then demonstrate with a counter how a hop of 5 is taken on the number line. You may wish to encourage students to count aloud as the hop is made. Then make a hop of 4, starting at the place the counter landed. You might choose to have them record what happened using the equation notation 5 + 4 = 9, or to informally describe the moves this way: “If you take a hop of 5 spaces and then a hop of 4 spaces, you land on 9.” You may wish to highlight the fact that in this model, spaces are counted, not points on the number line.
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