Sounds are light-activated – for best results, use puzzle in bright, direct light.) Durable pegs help kids two and older easily grasp and manipulate the six adorably illustrated pictures and pictures under pieces help with matching and boost self-esteem. Encourage language, memory, spatial awareness, problem-solving skills and more with this Melissa & Doug puzzle and Melissa & Doug toys. These Melissa & Doug toys are toddler learning toys, designed by Ms. Rachel and developmental experts to support all children, through their ages and stages, from 2-5+ years.