Amazing Child Montessori 5 Peg Boards (no pegs) Five 10 x 10 peg boards. Pegs not included. (picture shows some pegs but these are NOT included) Each boards measures 6 1/6" x 6 1/6"(157mm x 157mm). Please note the pegs in the pegboard may be initially stiff but the pegboard will loosen over time, or can be loosened gently by using the shaft of a small screwdriver Lots of Resources available for patterns - just search on internet for pegboard patterns and see image in this listing for ideas to search for. This peg board can be used for many of the exercises of the short bead stair and is particularly useful for subtraction as the pegs can be taken away, multiplication as all tables can be represented to 10x10 and division and used as the standard division board. So versatile and so simple the mathematical possibilities are endless: patterns, arithmetic, geometry, area, square numbers. Of course the set does not have to be used for mathematical purposes and will be equally at home on the practical life shelves.