In this story that introduces the fundamentals of addition and the concept of doubling, a swamp becomes quite crowded as the number of dinosaurs doubles each time, from one to sixty-four.
Join the dig for dinosaurs! Make reading your superpower with DK’s beautiful, leveled nonfiction.Use your reading superpowers to learn all about how dinosaurs were discovered - a high-quality, fun,...
The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system! Getting the facts behind the fiction has never looked better.Track the...
Over the past twenty years, the study of dinosaurs has changed from natural history to a true scientific discipline. New technologies have revealed secrets locked in the prehistoric bones in ways...