Learning Resources 1″ Wooden Colour Cubes (Set of 100) .Great value classroom resource! Develop early maths skills with these colourful blocks, a great hands-on teaching tool for a variety of maths activities. Bumper pack contains 100 wooden blocks in six bright colours (blue, green, red, yellow, purple and orange). Blocks measure 2.5cm. Includes useful tub for storage. Suitable for ages 3+.