This hilarious new book in the kid-favorite Just Joking series—packed with 300 science-themed jokes, riddles, knock-knocks, tongue twisters, and more—is scientifically proven to leave kids laughing, chuckling, and exclaiming "Eureka!" It's got jokes about all kinds of science stuff—kooky chemistry, funny physics, dinosaurs, space, and more—plus 10 stories of real-life scientific experiments that are so wacky you'll hardly believe them! This book is a gut-busting party-starter or a quiet-time entertainer, great for chuckling alone or reading aloud to friends and family. It's also perfectly portable: Toss it in a backpack or take it on the road for on-the-go giggles. The perfect read for science whizzes (and whiz wannabes), kid comedians, and laughter-lovers of all ages. Complete the collection with Just Joking Gross, Just Joking Dogs, Just Joking LOL! ... and more!