 Their relationship in size makes them a valuable part of the exploration in number concepts.Students are able to physically represent place value in the operations of addition, subtraction, multiplication, and division.Pattern blocks consist of various wooden shapes (green triangles, red trapezoids, yellow hexagons, orange squares, tan (long) rhombi, and blue (wide) rhombi) that are sized in such a way that students will be able to see relationships among shapes.