Attribute blocks are a great resource to develop shape and colour recognition for younger students and to sort the shapes by a combination of attributes to develop more advanced sorting skills by older students. Each set contains 5 shapes (circle, square, triangle, hexagon, rectangle), 3 colours, 2 sizes as well as 2 thicknesses. Making it possible to endlessly sort the shapes in different combinations. Each set has a total of 60 pieces per set. The largest square of this demonstration sized set is 8.5 x 8.5cm. A student-sized version is also available. Attribute blocks ideal in combination with logic rings, not included and sold separately, to create Venn diagram. Furthermore these Venn diagrams can assist with the sorting of the different attribute shapes.