2 years & up. Durable set of plant specimens in shatter-resistant acrylic. Set includes 9 authentic specimens; rose, rice, fibrous root, taproot, clover, wheat, maple leaf, daisy and fern frond. Double-sided cards featuring detailed images, fun facts and important information included. The stones fit perfectly inside the Specimen Stone Tabletop Stand for display in classroom centers (sold separately, item 38036).