Lesson 20 of 30 · Simple Machines
Lesson⭐ 30 XP🛠️ Engineer ShopPull the Wagon!
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Simple Machines.
🎯 Your mission
Understand the idea. Then look for it everywhere.
⚡ The twist
Constraints make you more creative, not less.
Mind = Blown
🛠️ The first computer bug was a literal moth stuck inside a machine in 1947.
Make a hypothesis first
Before you test: how many tries until it works?
What You'll Learn
When you pull a wagon, you use force to make it move toward you.
Key Words
Tap a word to see its definition.
Steps
Say the vocabulary words out loud. Can you repeat them?
Try pulling a wagon with one hand, then two hands. Which is easier?
Use your eyes, ears, and hands to explore. What do you notice?
Color a picture to show what happened.
Check Your Understanding
Question 1
1 of 3If you pull a wagon, does it come toward you?
Where you see this in real life
Your phone, your bike, your shoes — all designed with this idea.
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?”
Next Smart Experiment
We'll pick an experiment that matches exactly how you're thinking right now.
Share this experiment
Send it to a parent who's looking for a 10-minute kitchen science win.
Ready?
Pull the Wagon!
Understand the idea. Then look for it everywhere.
Full screen — no distractions
Checkout complete lesson on Simple Machines for Pre-School
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