Roar with the dinosaurs while learning early STEM biological facts with this set of Yellow Door Dinosaur Footprints! This set of dinosaur stones will excite young learners and capture their imaginations and curiousity. Each of these 8 double-sided stones have a raised footprint of a dinosaur on one side and an image of the dinosaur indented into the other, allowing children to examine, compare, and sort the 8 footprints. Dinosaur footprints include an Apatosaurus, Deinonychus, Hypsilophodon, Iguanodon, Quetzalcoatlus, Stegosaurus, Triceratops and Tyrannosaurus Rex. Made from a unique stone mix, they are suitable for indoor and outdoor use. Press the footprint into the sand, mud, or soil and create a trail for children to follow. Or make crayon rubbings, clay impressions, and compare and contrast the shape of the footprints. We recommend this product for children ages 3 years and older.