These double-sided chunky magnetic pieces help children to visualise what can be a hard to understand concept, enabling them to grasp a real understanding of fractions, percentages and decimals. The reversible pieces show equivalents, eg 1/5th is equal to 20% and also to 0.2, and you can line the pieces up on the magnetic grid or fill in sections of a shape or units and use the pieces to find the right answers. A dry wipe pen is also included.   Builds mathematical understanding Dimensions: 18 x 25 cm 144 double-sided pieces Manufacturers recommended age: 6-11 yrs