An inexpensive way to teach children patterns with these all time favorite fun and educational aids! Pattern Blocks are a versatile system for exploring geometry, symmetry, fractions, measurements and more! 100 Giant Foam Pattern Blocks. Soft blocks in 6 geometric shapes and 6 assorted colors Sizes range from 2 7/8 to - 5 3/4 inches. Information on how to place your order by fax or by telephone. Product Number: OT604021