A special heat sensitive fun board kids will love to play with! After placing their hands or fingers on the board, colour changes can be seen due to body heat. Colour will disappear 10-20 seconds later. A simple and fun way to teach kids about temperature changes and heat in human bodies. The board can be permantly mounted on wall or flexibly used with Masterkidz Flexible Mounting System and Masterkidz Free-standing Painting Window. Made from Russian Birch plywood.