Light of a periscope

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https://c.gethopscotch.com/p/wg8vxsa

 

Here’s the explanations on how to do this using Hopscotch.

http://www.youtube.com/watch?v=Q-Eyr0Mo4po

 

From grade 4 Math:

• estimate, measure, and record length, perimeter, area, mass, capacity, volume, and elapsed
time, using a variety of strategies;

From grade 4 Science:

. assess the impact on society and the environment of technological innovations related
to light and sound;

 

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