🔬 Part 1: Understanding Fair Tests

1. What is a fair test?

When you change many things at once

When only one thing changes at a time

When you don't measure anything

When you guess the answer

2. Why do scientists use fair tests?

To make experiments more fun

To get reliable and trustworthy results

To finish experiments quickly

To use less equipment

3. Fill in the blanks:

In a fair test, we change only _______ thing at a time and keep everything else the _______.

4. Which of these are important in a fair test? (Tick all that apply)

Controlling variables

Changing many things

Measuring results carefully

Keeping some things the same

🎯 Part 2: Variables in Science

5. Match each type of variable to its description:

Independent variable

Dependent variable

Controlled variables

What you measure or observe

The one thing you change

Things you keep the same

6. Investigation: "Which ball rolls fastest down a ramp?"

Independent variable (what changes): _________________________

Dependent variable (what we measure): _________________________

Name two controlled variables (what stays the same):

1. _________________________

2. _________________________

7. Explain why we need to control variables in a fair test:

🚀 Part 3: Design Your Own Fair Test

8. Choose one investigation question:

Does the size of a paper aeroplane affect how far it flies?

Which surface makes a toy car go fastest?

Does the height of a ramp affect how far a ball rolls?

9. For your chosen investigation, plan your fair test:

Question: _______________________________________________

What will you change? _______________________________________________

What will you measure? _______________________________________________

What will you keep the same? _______________________________________________

_______________________________________________

10. Draw a simple diagram of your investigation:

Fair Test Science Investigations

Fair Test Science Investigations

🔬 Part 1: Understanding Fair Tests

🎯 Part 2: Variables in Science

🚀 Part 3: Design Your Own Fair Test

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