This set of four puzzles depicts the stages of plant growth: seed; root development; plant shoot; and fully developed plant. Each puzzle measures 24 cm x 24 cm (about 9.5″ x 9.5″) and is made of durable, warp-resistant plywood with a satin-touch, natural wood finish.  Each puzzle piece is fitted with a wooden knob for easy removal, and the image is silk-screened directly onto the wood and then covered with a clearcoat to protect it for years to come. Weighing about 400 g (just under 1 lb) each, the puzzles have a pleasant weight to them, and fit into either of our puzzle cabinets for easy storage.