The Flying Machine Book: Build and Launch 35 Rockets, Gliders, Helicopters, Boomerangs, and More, by Bobby Mercer. Chicago Review Press, 2012 ($14.95)

Scholastic's Discover More series of print books comes with supplemental online material, including My Body (ages 4 and up), Planets (6 and up) and The Elements (9 and up). (from $7.99)

The Ultimate Book of Saturday Science: The Very Best Backyard Science Experiments You Can Do Yourself, by Neil A. Downie. Princeton University Press, 2012 ($29.95)

Ocean Sunlight: How Tiny Plants Feed the Seas, by Molly Bang and Penny Chisholm. Blue Sky Press, 2012 ($17.99)