Bug-Bug's Pie Spinner

A pie sits on the board with its slices in the wrong proportions. Spin and resize them until each slice matches the share it is supposed to represent — and the whole pie finally adds up.

Runs in your browser. Nothing to install, nothing to pay, no account.

Bug-Bug's Pie Spinner

How to play

1. Look at what each slice is meant to be worth.
2. Spin a slice to make it bigger or smaller.
3. Every slice has to fit — growing one shrinks another.
4. Match the whole pie to finish the round.

What it teaches

A pie chart answers one question only: how does this split into parts of a whole? The constraint that the slices must always total 100% is the entire idea, and it is also the thing most often forgotten. Because making one slice bigger visibly squeezes the others, players feel that trade-off directly. It is a good first encounter with proportion, and a good first reason to notice that a pie with eleven slices tells you much less than a pie with three.

Good to know

• Ages7–12, and curious grown-ups
• TimeAbout 5 minutes
• CostFree, no account
• Works onPhone, tablet, laptop

More games like this

• Bug-Bug's Bubble CatcherPull the string, catch the right bubbles, plot the chart.
• Bug-Bug's Dashboard DropCatch the falling charts and arrange them into a dashboard that makes sense.

Ready?

▶ Play Bug-Bug's Pie Spinner