Teacher Created Resources Foam pattern blocks in 5 shapes and 2 colors, sizes and thicknesses are lightweight, soft and washable. Blocks for pre-school+ grades help students to become masters in counting and sorting and comes in a reusable bag.. Age group and grade: Ages 5 - 9 and grades preschool+. - Usage ideas: Foam is lightweight, soft, quiet and washable. - Includes teaching tips. - Foam pieces in 5 shapes, 2 colors, 2 sizes, and 2 thicknesses set the stage for all kinds of sorting and grouping activities.40 total pieces. - Comes in a resealable storage bag. - Small parts, not for children under 3 years. - Number of pieces: 40 pieces. - Foam pattern blocks has seven each of six shapes - triangle, square, parallelogram, rhombus, trapezoid, and hexagon, great for counting, patterning, symmetry, fractions, angles, and problem solving for grades preschool+ and ages 5 to 9.