Each set includes 4 ten frames measuring 34 x 9.5cm. It is ideal for a wide range of maths activities such as addition, subtraction, number bonds, number work, subitising, 1 more and 1 less, and number relationships. Write your mathematical question or number in the chalk friendly area. Place natural materials or classroom counters (not included) into the ten frame spaces to solve the question. Made from FSC® certified beech wood. Age: 2+.