The colours help emphasise the base ten nature of the number system and make it simpler for students and teachers to describe what they are doing as they can refer to the different colours. \n4-colour Base Ten Set includes: 100 cubes, 10 rods, 10 flats, 1 block packaged in a box.4 colour plastic Base Ten MAB Blocks.\nBase Ten is an excellent mathematics manipulative for teaching place value and operations of whole numbers, decimals and algebra concepts.\nAge: 6+