3 years & up. Complete this wonderful Dinosaur Floor Puzzle Set for an Interactive Prehistoric Lesson with your class to discover dinosaurs. These impressive dinosaur puzzles are perfect for introducing the great dinosaurs to your classroom. The puzzles promote problem solving skills, collaborative play, and early STEM lessons. Encourage your children to ask questions about the dinosaurs and share interesting facts they already know. Land of Dinosaurs Puzzle measures 4' long and has 49 pieces. Dinosaur Scene Puzzle measures 36"W x 24"H and has 24 pieces.