Indeed the most versatile of all classroom manipulatives! These colorful wooden blocks are a fundamental part of any math program, Younger students find these intensely interesting materials a highly motivating way to explore one-to-one correspondence, sorting and classifying, pattern making, symmetry, geometry, number concepts and problem solving. Older students are motivated to investigate angles, similarity and congruence, geometrical theorems, fractions, algebraic functions and more! Each set contains 250 pattern blocks distributed as follows: 25 yellow hexagons, 25 orange squares, 50 green triangles, 50 red trapezoids, 50 blue parallelograms, and 50 tan rhombuses. Enough for 3-6 students.