Lesson 5 of 8 · Crosscutting Concepts

Experiment⭐ 30 XP

Patterns Repeat Across Scales

🧪Lab Brief #5

Crosscutting Concepts.

🎯 Your mission

Set it up. Test it. Be amazed.

⚡ The twist

Nature loves to surprise the careful watcher.

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Mind = Blown

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

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Make a hypothesis first

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

What You'll Learn

Branching appears in rivers, lungs, trees and lightning, because the same problem — covering an area or volume efficiently from one point — has the same best answer. Spotting a pattern in one system tells you where to look in another.

Key Words

Tap a word to see its definition.

Materials Needed

notebook
camera
ruler

Safety First

Have an adult check your set-up before you start, and tidy everything away afterwards.

Steps

Step 1 — Read

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

Step 2 — Do

Photograph or sketch four branching systems from different fields and measure how many branches come off each junction. Compare the counts and describe what problem each system is solving.

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

Branching recurs in lungs, rivers and trees because they share a:

How sure are you going to be?😐 maybe

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Where you see this in real life

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

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Stretch Challenge

Try this in real life this week.

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

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For the dinner table

“What's the most surprising thing you learned today?”

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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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