Lesson 77 of 84 · Engineering and Design

Lesson⭐ 30 XP🛠️ Engineer Shop

Fair Tests: Changing One Thing (Part 4)

🧪Lab Brief #77

Engineering and Design.

🎯 Your mission

Learn the rule. Then catch nature using it.

⚡ The twist

The first design always fails. That's the point.

🤯

Mind = Blown

🚀 The Saturn V rocket burned 20 tons of fuel per second at liftoff.

🔮

Make a hypothesis first

Guess: what's the weakest part of this build?

What You'll Learn

A fair test changes only one thing. If you change two things, you will not know which one made the difference.

Key Words

problem
solution
try again

Steps

Step 1 — Read

Look at the new words. Can you say each one?

Step 2 — Do

Design a boat from foil that can hold the most pennies without sinking.

Step 3 — Observe

Use your senses to describe what you notice.

Step 4 — Record

Write 1-2 sentences about what happened.

Check Your Understanding

Question 1

1 of 3

What does 'predict' mean?

How sure are you going to be?😐 maybe

🌍

Where you see this in real life

Every bridge, building, and gadget you've ever used started with this.

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Stretch Challenge

Try this in real life this week.

Find something that's broken at home and try to figure out *why* it broke.

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For the dinner table

“What's something around the house you'd redesign — and how?”

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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.

🖨️

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