David M. Schwartz

Introduces the concept of ratio by comparing what humans would be able to do if they had bodies like different animals.

Presents poems and brief facts about eleven animals that rely on the ability to camouflage within nature to survive in the wilderness.

Uncover ten mysteries of the natural world in these riddles paired with mystifying images that offer clues. Guess what creature made that pile of twigs, mass of leaves, frothy spittle, etc. And why? Answers are found by opening a generous gatefold and revealing full-color photographs.

Text and pictures try to make possible the conceptualization of a million, a billion, and a trillion.

Marvelosissimo the Magician explains the development of standard units of measure, and shows the simplicity of calculating length, height, weight, and volume using the metric system.

Introduces, in simple text and photographs, the characteristics of various animals that live in the desert. Includes a coyote, gecko, rattlesnake, mouse, scorpion, and tarantula.

Examines the life in and around a pond, including bullfrogs, crayfish, and snapping turtles.

Introduces, in simple text and photographs, the characteristics of some of the animals and plants that can be found in the forest. Includes a chipmunk, box turtle, fern, bull moose, moth, ermine, and white birch.