Title: Backyard Rockets: Stomp Rockets, Catapults & Kaleidoscopes, Author: Curt Gabrielson
Title: Tinkering: Kids Learn by Making Stuff, Author: Curt Gabrielson
Title: Stomp Rockets, Catapults, and Kaleidoscopes: 30+ Amazing Science Projects You Can Build for Less than $1, Author: Curt Gabrielson
Title: More Tinkering: How Kids in the Tropics Learn by Making Stuff, Author: Curt Gabrielson