Warning! These bones are guaranteed to casue a lot of excitement! Dinosaurs are a source of fascination for many children and they will find much to entertain and educate them with our Dinosaur Bones resources. The 16 bones, cast from a durable and unique stone mix, measure between 2.5–8’’and can be used to introduce the concepts of sorting, measuring, doubling and halving. Children will love to discuss their discoveries and this set provides the perfect opportunity to develop and practice the descriptive language of measurement.