Learning Resources MathLink Cubes Big Builders. Build animals, vehicles, and more with our bestselling MathLink Cubes! Follow the activity guide, or make your own creations. Colourful Cubes connect on all sides and work with all MathLink Cubes products. Set includes 200 MathLink Cubes in 10 colours and an activity guide with 20 building challenges. Each cube measures 2cm D. Suitable for ages 5+.