Science Common Sense

472 - How do we design a fair experiment?

Designing a fair experiment is like making sure you're checking one thing at a time. Here's how to do it:

1. Choose what to test: Pick one thing you want to test, like how fast plants grow in different types of soil.
2. Make a control group: This is a group that doesn't get the thing you're testing, so you can compare.
3. Make a test group: This group gets the thing you're testing.
4. Keep everything the same: Except for the thing you're testing, make sure everything else is the same for both groups, like the amount of sunlight or water.
5. Measure and record: Measure and write down what happens to both groups.

This way, you can be sure what you're testing is really making a difference. It's like a fair contest where you can see what's really working.