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Principle Describe and accurately recreate a layout of geometric shapes.

Principle Create a paving

Principle Put the 5-square pieces back

Principle Create the polygon with the greatest number of edges possible using only straws and paperclips.

Principle Starting with a rectangle, keep cutting out the largest possible squares and see what’s left.

Principle Estimate how many macaroni pieces can fit in one cubic meter.

Roll the dice and move around the clock. With just two pieces of information, I’ll find the value of the first die. But how did I do it?

The magician predicts the total that will be obtained. How does she do it?

We can clearly see the magician counting the cards, but how does he find the total of the numbers? He doesn’t know them!

With a few counters, some multiplications, and just one revealed piece of information, the magic happens!

No matter the moves made on a 3 by 3 grid, the magician will force you to end up exactly where he wants — without even looking!

Let’s play with two colors and sort the shuffled cards. With just one question, the magician will impress you.