Learning Resources Giant Magnetic Pattern Blocks Demonstration Set. Reinforce a variety of primary numeracy skills including shape recognition, symmetry, patterning, congruency and area with these brightly coloured, oversized pattern blocks. Pieces feature magnetic backings and can be used for any demonstration purposes on any magnetic surface. Giant, proportionately sized pieces are 3 times the length of standard pattern blocks and 9 times larger in total area. Shapes are colour coded for easy differentiation. An ideal front of class resources. Hexagon measures 15cm W. Suitable for ages 4+.