This is an amazing book of puzzles, illusions, paradoxes and games. It's an exciting adventure for the mathematical mind. Too overwhelming for those who are not, but specific puzzles can be used from the book to be shared with a child or class less mathematical. It is a great resource to go back to again and again for a challenge or to demonstrate fun aspects of math.

related-geometry, numbers, logic and probability, topology, points and lines, graphs and networks, curves and circles, perception, shapes and polygons, patterns, mathematical concepts, science recreation, dissections
RL=5th & up, as young as 1st grade for single puzzles