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Lesson 31 of 84 · Engineering and Design
ExperimentTesting Our Ideas (Part 2)
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
- design
Materials Needed
- pennies
- plastic wrap
- cardboard
Safety First
- Protect your work surface with newspaper or plastic.
Steps
Step 1 — Read
Read about Engineering and Design 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?