Kids love the tub--and it makes a really cool "laboratory" for carrying out
experiments that are gallons of fun. Find out why some toys sink but rubber
ducky always floats. Make a "wave machine," a water cannon that blasts
mind-boggling explosions of liquid; zippy hydroplanes--or peer through
periscopes and prepare perfect bubble solution. Every page bursts with brilliant
drawings, and loads of photographs that display the entire process.