79
Lesson 79 of 84 · Forces
ExperimentSpeed and Direction (Part 3)
What You'll Learn
A lever is a simple machine. A seesaw is a lever—push down on one end and the other goes up!
Key Words
- pulley
- wheel
Materials Needed
- marbles
- paper clips
- rubber bands
- blocks
Safety First
- Adult supervision recommended.
- Do not taste any materials.
- Wear safety goggles when mixing liquids.
Steps
Step 1 — Read
Look at the picture and read the labels.
Step 2 — Do
Drop a feather and a coin at the same time from the same height. Which hits the ground first?
Step 3 — Observe
Draw a picture of what you observe.
Step 4 — Record
Share your results with a partner.
Check Your Understanding
Question 1
1 of 3How can you make something move?