Great for developing fine motor skill Encourages higher level thinking and creative exploration Excellent tool for encouraging writing in a fun way Heat Sensitive science lesson Observation skills Deductive reasoning. Children just press their hands on our color-changing board…and leave behind a surprising impression! Our heat-sensitive board changes colors as little fingers trace letters, draw shapes and more—giving kids hours of delightful fine motor practice…and an introduction to pre-writing. The hardwood board features an easy-grip handle and comes with a guide. Board measures 13" x 16 1/2".