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AI Explorers 3-5 / Week 04 / Friday
5/6
Week 04 · Features and Models

Friday

Models all around
// Clues, questions and trees
⏱ about 15 min

Friday: Models All Around

Raven sketches a tree for picking a snack. "Hungry? Yes. Want fruit? Yes. Apple!"

Rocket laughs. "You made a decision tree for snacks!"

"What do you notice?" Raven asks. "We use trees and models all the time."

Nova hums. "Here is a hint," she says. "Where else do you answer yes or no questions to decide?"

Everyday models

People use models every day.

A map helps you find your way. A globe shows the shape of Earth.

A toy rocket is a model of a real rocket.

A yes or no tree can help you pick what to wear.

Is it cold outside?
Yes
Is it raining? Yes: raincoat and boots. No: warm coat.
No
Is it raining? Yes: raincoat. No: t-shirt.
FOLLOW THE WEATHER TREE
  • Read the question.
  • Tap your answer.
It is cold and raining. What does the tree pick?
It is warm and sunny. What does the tree pick?
It is cold and snowing. The tree has no snow question. What might go wrong?
Week reviewTrue or false?
A feature is a clue that describes something.?
A decision tree uses yes or no questions.?
A model shows everything about the real thing.?
The crew's tree got card 8 wrong.?
A mistake means we should give up.?
WHY THIS EXERCISEModels help us decide, they leave things out, and mistakes help us improve.
Color and shape are ____.
A map is a ____ of a place.
Each yes or no path in a tree is a ____.
BUILD A DECISION TREE
  • ?List their features.
  • ?Add questions until each path ends in an answer.
  • ?Test the tree and fix mistakes.
  • ?Choose the question that splits them best.
  • ?Pick the things you want to sort.
WHY THIS EXERCISEGood models are planned, built, tested and fixed.
What do we call a clue like color, shape or size?
WHY THIS EXERCISEFeatures are what models use to sort things.
Try it
Make a yes or no tree to sort your socks, shoes and hats.
Test it on three real things. Did each one land in the right spot?
On paper, draw your own decision tree for sorting three kinds of toys.

What a week of trees! Next week, Rocket tries to fix card 8 two different ways.

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