Lesson 6 of 8 · Engineering and Design

Experiment⭐ 30 XP🛠️ Engineer Shop

Building Something That Has to Hold

🧪Lab Brief #6

Engineering and Design.

🎯 Your mission

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

⚡ The twist

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

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Mind = Blown

🛠️ The first computer bug was a literal moth stuck inside a machine in 1947.

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Make a hypothesis first

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

What You'll Learn

Engineers test to destruction on purpose. Loading a structure until it fails tells you where the weak point is, which is the only reliable way to know what to strengthen next time.

Key Words

Tap a word to see its definition.

Materials Needed

straws
tape
book
ruler

Safety First

Keep fingers clear when the tower collapses and clear the desk edge first.

Steps

Step 1 — Read

Read the explanation above and note the two key terms before you start.

Step 2 — Do

Build a tower from twenty straws and tape that must hold a book 20 cm above the desk. Test it, note exactly where it buckles, rebuild with the same materials, and test again.

Step 3 — Observe

Record what actually happened, including anything that did not match what you expected.

Step 4 — Record

Write a conclusion that answers the question this lesson opened with, and state your uncertainty.

Check Your Understanding

Question 1

1 of 2

Testing a structure to failure tells you:

How sure are you going to be?😐 maybe

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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.

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

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