PowerMath

Presents an introduction to the concept of using computational skills in problem solving, and contains an overview of the history of the Mayan people of Mexico, including information on their society, economy, architecture, mathematics, and writing.

Describes the construction and history of the Erie Canal and uses the information to illustrate elementary division.

Gives several examples of recipes used during the Civil War, such as gingerbread, groundnut soup, gumbo, and hardtack, and shows how to add and subtract fractions to double, triple, or halve the ingredients.

Describes the history of the Silk Road, providing color maps and illustrations, and shows how to find distances using map scales and multiplication.

Explains how to make a profit at a small business venture, such as a bake sale, focusing on how to determine the unit cost of an item in order that a profit can be made.

Explains the concept of right angles using the classic folded-paper art of origami, and provides directions for making several origami forms.

Describes early counting systems--such as those of the ancient Egyptians and Babylonians--the first zero, and the use of the zero throughout history.

This book uses four mathematical operations to describe the Vikings' ships and the Vikings' way of life.

Explains math fractions by means of musical notation.

Examines the history and buildings of Washington, D.C., and uses that study to explain how to measure the areas of rectangles.