Start your next activity now

Does this trick work every time? How can you make it happen? Bring in the clock, and the trick is done.

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

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?

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?

Ring ring! Who is it? It’s the chosen card telling you where it is. Listen closely, and it will guide you to becoming a great magician.

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.

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

With the help of a few calculations, the magician identifies the chosen card. Will you be able to do the same?

A number of your choice, jumps of your choice, and the magician finds the sum of 10 numbers without looking. What does he know? How does he do it? It's up to you to find out.

Do you want to perform an extraordinary magic trick? Doing magic with dominoes is possible! All you need is a complete set of standard dominoes, and you're ready to go!

How can you find the sum of randomly chosen numbers without even looking at them? Is it a trick? Magic? Pay close attention and try to uncover the mystery!

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?