Explains the science of how ramps and wedges work, discussing real-life examples such as scissors, zippers, slides, and ski jumps, and includes activities that illustrate the principles covered.
Presents lessons and scientific experiments through which readers can learn about various aspects of time, such as night and day, latitude and longitude, and different types of clocks.
Illustrations and simple text introduce young readers to the mysteries of space, including information on the sun, planets, distant galaxies, and stars.
Presents an introduction to trucks, in simple text with illustrations, desribing the different kinds, the people how drive them, and how they are used.