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;