Our Libo Green Boards with Double Lines and Squares are an excellent Montessori teaching aid for children of all ages. Constructed from child-safe materials, the boards feature a high quality fine finish with beautifully detailed lines and squares. With this set of teaching materials, your little one can explore creative activities such as counting, grouping and sorting in a fun and safe way. Designed for durability and years of use, the Libo Green Boards are made from high-grade wood items that will last through many exploratory learning sessions. The unique graphics create visual stimulation that is sure to keep kids engaged while they learn new concepts in a hands-on manner.