Gravity- Vertical Jump and Standing Broad Jump

This week we talked about gravity and it's effect on the vertical and broad jump. We began with a demonstration of gravity using a large object(a basketball) and a small object(rock). We demonstrated how gravity pulls on large and small objects the same. We introduced Newton's 1st law of motion and talked about how gravity pulls us down. We talked about using the scale to measure how much gravity is pulling us down to the earth. We then talked about how we can overcome gravity by using our muscles and then we could measure that using the vertical jump.
We reviewed how to read a ruler and scale. We used both yard and meter stick. This week we rounded our numbers to the nearest inch. Next week we will round to the nearest half inch. On the scale we rounded to the nearest pound.
We demonstrated how to perform the vertical jump test. We then let the students perform the test on each other. They were instructed to get 3 vertical jump measurements. Their journal entries had to include inches, cm's. Their weight entry must include pounds.
We then introduced the standing broad jump. We instructed the students on how to perform the jump correctly and how to measure the distance. Their journal entry had to include 3 jump measurements and their weight.