Use to reinforce: Addition & subtraction, fractions & decimals, multiplication & division, pattern & algebra, geometry & measurement and probability & statistics. 64 Cuisenaire Rods supplied in total: 20 white (shortest) 12 red and four of each of light green, purple, yellow, dark green, black, brown, blue and orange (longest). Rods come in 10 different sizes and colours, and are ideal for front of class demonstrations. Magnetic backing allows rods to stick to whiteboards and other magnetic surfaces and come complete with a convenient storage tray with lid and Teacher's Guide. Designed for children aged between three and twelve years old.