Williams, John

Explores the wheel through projects involving rollers, carts, wagons, and other devices using wheels to function.

Provides instructions for projects involving rafts, paddle boats, and other objects that float.

Provides instructions for making and using a variety of machines, including levers, diggers, cranes, and pulleys.

Introduces the concepts of flight through a variety of projects and experiments.

Explores color and light through projects involving kaleidoscopes, periscopes, shadow boxes, and other devices.

Provides instructions for making or using windmills, pinwheels, kites, and other devices that need air to set them in motion.

Explores the concept of time through a variety of projects involving sundials, water clocks, and other time-keeping devices.

Explains how young rabbits are born, what they eat, and where they live.

Describes the physical characteristics, habits, life cycle, and habitats of the graceful migratory bird the swallow.

Describes, using the chestnut tree as an example, the growth and life of a tree from seed to maturity.