50 Optical Illusions

This title includes fifty cards featuring mind-bending illusions, explaining how the illusion works in tricking the eye. This title contains a 'revealer' card, which can be used to measure and check the illustrations to increase understanding of how each illusion works.

---

A set of 50 of the most amazing optical illusions ever created. Each card has a mind-boggling illusion on one side and an explanation of how it works on the other. Includes a “revealer” card to help check colours and take measurements to show that seeing really is believing.