Describes different forms of energy, including kinetic, potential, and chemical energy, and explains where the types of energy used by nature, one's body, and machines come from, discussing the importance of conserving fossil fuels.
Presents a description of how construction toys work, in simple text with illustrations, with explanations of the basic principles, materials, and designs, including how building bricks stay together, what nuts and bolts do, and what a pulley is.
Presents an introduction to riding skateboards and scooters, including information on how to ride them, how they work, and tips on safety and safety equipment.
Examines what makes sound and the different kinds of sounds including music, the sounds of nature, and traffic on the streets, how fast sound travels, and much more.
