Encourage geometric exploration! Pattern blocks are made in six bright colors and six shapes and each side is calibrated so all the pieces fit together. Young learners can explore geometry and measurement concepts such as shapes area and symmetry. Also can be used for patterning sorting classifying and attribute recognition. Set includes 36 design cards varying in complexity and 124 Plastic Pattern Blocks in six shapes and colors. Warning: Choking Hazard - Small parts. Not for children under 3 years. Grades: 2 to 5. Ages: 7 to 11.