Teacher Created Resources Foam attribute 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+.Subject: Counting and sorting.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.Test prep flash cards is made of foam which is lightweight, soft, quiet and washable.