68
Lesson 68 of 84 · Engineering and Design
ExperimentComparing Our Results (Part 4)
What You'll Learn
Good scientists repeat their experiments to make sure the results are the same each time.
Key Words
- record
- predict
- tool
Materials Needed
- pennies
- plastic wrap
- cardboard
Safety First
- Dispose of materials properly after the experiment.
- Handle glass items carefully to avoid breakage.
Steps
Step 1 — Read
Read and learn: Good scientists repeat their experiments to make sure the results are the same each time.
Step 2 — Do
Follow the steps one at a time.
Step 3 — Observe
Look for something that changed. What is it?
Step 4 — Record
Circle the correct answer on your worksheet.
Check Your Understanding
Question 1
1 of 3Is it okay to make mistakes in science?