Equip the next generation of scientists with a brand new series from Chris Ferrie, the #1 science author for kids Red Kangaroo is playing with her favorite ball--she throws it into the air and it comes back down. But what makes this happen? She knows that Dr. Chris will have the answer Soon, Red Kangaroo learns about force, mass, and acceleration--and that Newton's Laws are at work anytime anything moves Chris Ferrie...