Developed to show how one concrete material can be used in a variety of ways in the mathematics program. Some concrete materials only have one primary focus, but DECI-BLOCKS™ can be used in a variety of meaningful ways in the math program to deepen students’ conceptual understanding of each strand of mathematics. DECI-BLOCKS™ are particularly powerful when looking for fractions, as they give the student an area of awareness of fractions and the student can represent all of the fractions with DECI-BLOCKS™. Includes 250 pattern blocks plus a 52-piece DECI-BLOCKS™ set.