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What do we already know?

You've done investigations before. Let's wake up what you already know.

Talk to your partner

What is an investigation?
What makes a test fair?
Why do scientists do experiments more than once?

Quick check

True or false?

"In a fair test, you can change two things at the same time."

Thumbs up = true · Thumbs down = false. Be ready to explain!

An investigation is a planned way to answer a question using evidence — not just guessing.

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