Geometry SticksThe geometry stick material consists of a series of color coded sticks, plastic curves, a plastic measuring angle, a plumb line, tacks and brad fasteners, all stored in a compartmentalized wooden box with lid. The Geometry Stick Material is used in the Elementary classroom for the study of lines, the measurement of angles, and the construction and analysis of plane geometric shapes. Wooden Box Dimension: 42 x 29 cm Recommended Ages: 5 years and up