Dinosaurs 3-D Mazes. Travel back in time to herd these bewildered dinosaurs to their destinations. When you put on the enclosed 3-D glasses, the colorful mazes will leap right off the page, surrounding you in a labyrinth of sharp horns and pointy teeth. But don't be afraid! These easy mazes are geared toward kids ages 4 to 8, and complete solutions guarantee that no one will be trapped in the prehistoric past.