Martin Gardner, a well known authority on math and logic puzzles, has selected some of his favorite puzzles in this collection. Some are his own original puzzles; others are compiled from other sources.

The more math you know, the more you will appreciate these puzzles. The book is probably best for teens and adults.

First of all, let's begin by saying...THIS IS NOT REAL CHOCOLATE! Sorry, hate to break it to you, but if you try to manipulate pentominoes or tetris-shaped pieces of real chocolate for very long, you're going to end up with chocolate sludge all over your fingers, and no more toy to play with. If you have real chocolate, EAT IT!

But if you've got Chocabloc, you've got a puzzle on your hands. Can you fit all the tetris and pentomino pieces together to fit in the tray? What other shapes can you create? Get a friend to make a shape and trace around it. Now can you create that same shape?

This would probably make a great Christmas gift for your favorite math teacher, too!

This is a combination of manual dexterity and problem solving. Manual dexterity is necessary to keep the marble on the track. But problem solving is also required to figure out the proper way to turn and rotate the globe to move from one obstacle to another.

The Perplexus comes in three flavors: Rookie Perplexus, Original Perplexus, and Perplexus Epic, which is featured here.

We have the "Original Perplexus" and have found it to be a great conversation piece; when we have visitors in our home, often the Perplexus ends up getting passed around the room repeatedly, as people take turns trying to get through the three dimensional labyrinth.

Origami comes from the Japanese words for "folding" and "paper." It is the art of folding paper to create beautiful, elegant designs - three dimensional paper sculptures! This book provides origami paper, plus instructions for making 32 different origami projects, including animals and other shapes.

While you're buying this book, you might want to look under "recommended items" for additional origami paper, so the fun can keep on going!

Back in the eighties, the Rubik's Cube was quite a craze - everyone had one of these puzzles. The popularity of the cube has significantly waned since then, but occasionally variations will crop up.

This cube has 7 squares per edge (that makes 49 per face, right?) and it is described as having "19.5 duoquinquagintillion permutations."

Hurts my brain just thinking about it!