HLJgift Early Baby Learning Eductional Development Toys Montessori Wood Math Number Blocks Shape Teaching Tool Wood Board Preschool Toy Kid The toys can be used as teaching tools in montessori school, home schooling, or early childhood development. This product aims at teaching the concepts of colours and numbers, eye and hand coordination. Material: Wood+ plastic Size: about 44 x 14 x 1.5cm/17.32 x 5.51 x 0.59 inch This toy contains small parts, so it is not suitable for children under 3 years.