Eye and ear-catching puzzles enhances matching and listening skills. Puzzles have light-activated sensors. Easy-to-grip plastic pegs on each piece make them easy for small or arthritic hands to grasp or manipulate. The interactive, sturdy wooden puzzle helps develop or re-develop fine motor skills and auditory processing skills. This set contains 3 sound puzzles: Zoo sound puzzle that has eight favorite zoo animals, the Construction puzzle that contains eight different construction tool pieces, and the Fire truck puzzle that contains 9 pieces to build Engine #6 fire truck. Puzzles measure 9” x 12” and require 2 “AAA” batteries (not included).