Walker, Sally M

Contains examples and experiments that provide information about matter and help readers better understand the concepts related to it.

Describes the life of Mary Anning, who discovered many of the best and most complete fossils in nineteenth-century England, yet received little credit for her work.

Henry Brown copes with slavery by singing, but after his wife and children are sold away he is left with only his freedom song, which gives him strength when friends put him in a box and mail him to a free state.

An introduction to the physical characteristics, habits, and natural environment of the common and the pygmy hippopotamus.

Provides information about rocks, describing the different kinds of rocks found above and beneath the Earth's surface and explaining the rock cycle.

The members of the Vowel family have a hard time talking until their children, Alan, Ellen, Iris, Otto, and Ursula, are born, and when one of them gets lost one day, it takes their Aunt Cyndy to fix the problem.

Describes work, machines, friction, wheels and axles, and gears in everyday surroundings, and presents experiments that explain how they work.

Provides information about soil, describing its different layers, colors, and textures and explaining how it forms and how to take care of it.

Describes work, machines, levers, and force in everyday surroundings, and presents experiments that explain how they work.

In the time when witches tiptoe about to have their Halloween fun, ancient Druscilla knows her creaking knees will prevent her from being sneaky and sets out to find a silent conveyance for herself, her cat, and her jack-o-lantern.