Force of Nature! Unique-shaped 1000-piece jigsaw puzzle for ages 12 and up. Each puzzle comes with an educational Madd Capp Fun Facts booklet. On one side is a fold-out puzzle image to hang as a poster or use as a reference. The flipside is chock-full of cool information! Did you know, for instance, that if your yard is littered with acorns, you're in a "mast year?" Fingers crossed some seeds survive and sprout – only one in 10,000 acorns grows into a tree!