Lesson 31 of 84 · Engineering and Design

Experiment⭐ 30 XP🛠️ Engineer Shop

Testing Our Ideas (Part 2)

🧪Lab Brief #31

Engineering and Design.

🎯 Your mission

Predict it first. Then prove yourself right (or wrong).

⚡ The twist

Every solution creates a new problem. That's good — that's the next project.

🤯

Mind = Blown

🌉 The Eiffel Tower can grow 6 inches taller in summer because metal expands when hot.

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Make a hypothesis first

Predict: which design will hold the most weight?

What You'll Learn

When scientists test ideas, they change one thing at a time and keep everything else the same.

Key Words

tool
material
design

Materials Needed

pennies
plastic wrap
cardboard

Safety First

Protect your work surface with newspaper or plastic.

Steps

Step 1 — Read

Read about Engineering and Design with a partner or grown-up.

Step 2 — Do

Build the strongest bridge you can using only paper and tape. Test it by placing coins on top.

Step 3 — Observe

Watch carefully. What happens?

Step 4 — Record

Draw and write about what you learned.

Check Your Understanding

Question 1

1 of 3

What does a scientist do?

How sure are you going to be?😐 maybe

🌍

Where you see this in real life

Your phone, your bike, your shoes — all designed with this idea.

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Stretch Challenge

Try this in real life this week.

Build something — anything — out of stuff in your recycling bin.

👨‍👩‍👧

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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