Ramps are simple machines used for work and play. Workers use them for easy loading and unloading. Skateboarders use them to do tricks. Readers will learn how ramps make work easier and how they are used in everyday life. Blastoff! Series
Discover how math applies to the game of football, from the length of the field to the calculation of players' stats.
Discover how math applies to the auto racing world, from the distance around the track to the calculation of drivers' stats.
Discover how math applies to the game of baseball, from the distance between the bases to the calculation of players' stats.
An elementary introduction to the physics involved in the sport of volleyball, including scientific concepts such as gravity and acceleration, and actions such as bumping and spiking.
Take a climb high into the mountains! This basic introduction to mountains explains the different kinds of mountains, how mountains form, and how people use mountains for recreational activities. Blastoff! Series
Harley-Davidson might be the most popular brand of motorcycle in the world. Readers will learn about the history of Harley-Davidson, the features of Harley-Davidson bikes, and the riding experience these famous bikes can provide.