It contains 21 numbers and 5 mathametical symbols which can be easily lifted out of its cavity.Our wooden puzzle is designed as educational tools that can help you to teach your child about maths. These are great for sharpening a toddlers cognitive skills, hand-eye coordination and fine motor skills. Colorful appearance makes it quite popular with children. Kids learn to assemble and put together the blocks to match the slot in the board. The colorful apperance & pictures on the board makes learning easy and interesting at the same time. In the process of playing and learning, enjoy the joyous of family happiness. Lets spend more time in accompanying children and dont miss that precious time . Great gift for preschooler. They will really love playing with this well made sturdy wooden puzzle. Contents: 1-21 Wooden Numbers, 1base board.