Precision crafted blocks are the number one manipulative for teaching grouping, place value, number concepts, operations, measurement, fractions, decimals, percentages and volume. Scored in centimetres on all sides these durable blocks are sure to give years of use. An early and sound knowledge of base ten can lead to mathematical success in years to come. Wooden Flats – includes 10cm x 10cm x 1cm x 10 pieces.