Hape Shape Puzzle Math This wooden puzzle consists of 23 pieces, one puzzle piece for each number or math symbol. Count how many ways you can play with these wooden numbers from 1 to 20 by adding, subtracting, matching colors, arranging. The possibilities are endless! Specifications: Gender: junior Material: wood Color: blank, multicolor Number of pieces: 23 Height numbers: 4 cm Puzzle dimensions: 28 x 28 cm (LxW) Age: from 3 to 6 years Contents: 20 Numbers 3 Math symbols 1 Board