The K'NEX Elementary Math and Geometry Set allows students to construct squares, rectangles, trapezoids, rhombi, prisms, triangles, and quadrilaterals, plus symmetry, pattern and fraction models. Twelve challenges are included to help fine-tune students' understanding of shape characteristics and attributes. Set includes 142 K'NEX parts and a 44 page instruction booklet to build 38 models. This set can support 3-4 students working as a team. It comes packaged in a strong plastic storage case with movable dividers and transparent locking lid. The set also includes a teacher's guide with activity and expansion ideas.