Sturdy plastic, transparent geoboard features a 5 x 5 grid with raised edges to protect knobbed pegs. Perfect for overhead projector. Boards measure 7.25" x 7.25". Ages 5-13. By Learning Resources.
Great for modeling on the overhead, concepts such as: line segments, parallel and perpendicular lines, angles, geometric shapes, tangents, fractions, decimals, and congruency.
There are scratches to the plastic, but the pegs are all intact. Includes the instruction booklet.