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Lesson 2 of 8 · Waves

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Writing a Hypothesis

🧪Lab Brief #2

Writing a Hypothesis.

🎯 Your mission

Learn the rule. Then catch nature using it.

⚡ The twist

Nature loves to surprise the careful watcher.

🤯

Mind = Blown

🔬 The more you look, the more nature shows you.

🔮

Make a hypothesis first

Before you start: write down what you think will happen, and why.

What You'll Learn

A hypothesis is a testable prediction about what will happen in an experiment. A good hypothesis is specific and based on prior knowledge or observations.

Key Words

Tap a word to see its definition.

Steps

Step 1Read

Look at the vocabulary words and write a definition for each in your own words.

Step 2Do

Design an experiment to test a hypothesis. Identify your independent variable, dependent variable, and controls. Run the experiment and present results.

Step 3Observe

Look for patterns in your observations.

Step 4Record

Make a graph or chart showing your results.

Check Your Understanding

Question 1

1 of 3

What is a hypothesis?

🌍

Where you see this in real life

This shows up in your everyday life more than you'd think.

🏆

Stretch Challenge

Try this in real life this week.

Try one experiment in real life this week — even a tiny one.

👨‍👩‍👧

For the dinner table

What's the most surprising thing you learned today?

🎯

Next Smart Experiment

We'll pick an experiment that matches exactly how you're thinking right now.

🧪Share card

Share this experiment

Send it to a parent who's looking for a 10-minute kitchen science win.

Ready?

Writing a Hypothesis

Learn the rule. Then catch nature using it.

Full screen — no distractions

🖨️

Checkout complete lesson on Waves for 4th Grade

Get the full Waves track as a printable PDF — all lessons, worksheets, and answer keys.

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Writing a Hypothesis — Waves | 4th Grade Science | LittleActivity