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Principle Use geometry to understand how artists create the illusion of depth in 2D using vanishing points, connecting mathematics and art.

While hiking in the mountains, Logan passed the same spot at the same time—twice. He’s certain of it! But how?

Even though the cards are cut several times, the magician still manages to find all the ones of the right color. Can you do it too?

How can you slice a loaf of bread into 8 pieces using only 3 cuts of a knife?

Happy birthday! A riddle where you have to figure out the maximum number of friends present at a party — with a rather strange clue.

Quick! How can you spot the bronze ring in just three weighings on a balance scale? Luckily for him, Mr. Bolzano is a mathematician and knows exactly how to do it! But how does he do it?

Every summer day, the number of water lilies in the pond doubles. When will the pond be full? Think carefully, as this puzzle can be quite challenging.

Choose any number between 1 and 20, make simple moves on a clock, and I’ll guess the value of your die! How can it always be found?

Can you figure out Gabrielle's birthday?

You can lie or tell the truth—it's your choice. The magic works and always reveals the truth. The cards will confirm it!

The cards are flipped several times and, in the end, it’s as if nothing happened: the jacks remain facing the opposite direction from the other cards. Are the jacks really rebellious?

Pair up cards every time by doing what the magician does in this trick.