8
Lesson 8 of 84 · Light and Sound
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
- tool
Materials Needed
- plastic wrap
- cardboard
- tape
- scissors
- straws
- paper clips
Safety First
- Tie back long hair before starting the experiment.
Steps
Step 1 — Read
Read the introduction. What is this lesson about?
Step 2 — Do
Build a tower from spaghetti and marshmallows. Measure how tall you can make it.
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?