51
Lesson 51 of 84 · Light and Sound
ExperimentTesting Our Ideas (Part 3)
What You'll Learn
When scientists test ideas, they change one thing at a time and keep everything else the same.
Key Words
- tool
- material
Materials Needed
- cardboard
- tape
- scissors
- straws
- paper clips
Safety First
- Dispose of materials properly after the experiment.
Steps
Step 1 — Read
Read about Light and Sound with a partner or grown-up.
Step 2 — Do
Build the strongest bridge you can using only paper and tape. Test it by placing coins on top.
Step 3 — Observe
Watch carefully. What happens?
Step 4 — Record
Draw and write about what you learned.
Check Your Understanding
Question 1
1 of 3What does a scientist do?