Why does it do that? How does that work? Inspire the world s next great physicist with these great songs about electricity, magnets, force, sound, light, protons, neutrons, electrons, levers, pulleys, simple machines and more. Product is meant for Ages 4 to 9. Physics CD / Book Set includes: -Music CD -24-page Activity Book with -lyrics -eight experiments -a quiz -a letter from a physicist. Vocals. Titles Include: When I Grow Up I Want To Be A Physicist It's Electricity - A Kind Of Energy Matter Is All Around Protons, Neutrons And Electrons Levers, Pulleys And Simple Machines What Is Physics? What Does A Physicist Do? What Is Sound? Can You Name These Sounds? The Sun Is So Important The Colors Of The Rainbow Forces Make Things Begin to Move"