8
Lesson 8 of 84 · Engineering and Design
ExperimentComparing Our Results
What You'll Learn
Good scientists repeat their experiments to make sure the results are the same each time.
Key Words
- record
- predict
Materials Needed
- pennies
- plastic wrap
- cardboard
- tape
- scissors
- straws
Safety First
- Wear safety goggles when mixing liquids.
- Wash hands after handling materials.
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?