Reinforce shape recognition, symmetry, patterning, similarity, congruency, fractions as well as area and more with this set of 52 Magnetic Giant Pattern Blocks. 9 times greater in total area than standard pattern blocks. Giant sized pieces based on metric measurements. The square measures 9 x 9cm while blocks made of a plastic laminate with magnetic backing. Pieces are somewhat bendable as not made from a hard plastic. For ages 4+.