Shirley Willis

Explains in simple words various aspects of the moon, such as its rotation, orbit, composition, age, temperature, and location, as well as lunar eclipses, the moon's pull on the ocean, lunar landings, and surface features.

Questions and answers explain water, the water cycle, and such aspects of weather as rain, clouds, ice, and snow. Includes experiments and activities.

Introduces the concepts of distance and length, discussing how they are measured, why measuring is important, units of measure, perspective, and the reasons for measuring a variety of objects and distances.

Introduces the concept of weight, discussingq units of weight, methods of measuring weight, and the importance of weight measurement for a variety of uses.