Introduces the history of money and discusses its development from items such as shells and furs to legal tender; features a glossary; and lists resources to explore the subject further.
Introduces taxes and explains what they are, how they are collected, and what they are used for; features a glossary; and lists resources to explore the subject further.
Introduces supply and demand, defining what they are, what affects them, and how they affect business; features a glossary; and lists resources to explore the subject further.
Discover how math applies to the game of soccer, from the length of the field to the calculation of players' stats.
Introduces payment methods including cash, checks, and credit; features a glossary; and lists resources to explore the subject further.
Introduces money management, including how to create a budget and the importance of spending, saving, and donating; features a glossary; and lists resources to explore the subject further.
Discover how math applies to the game of hockey, from the length of the rink to the calculation of players' stats.
Discover how math applies to the game of basketball, from the length of the court to the calculation of players' stats.
Introduces bartering and explains what it is, its benefits and challenges, and what makes a good transaction; features a glossary; and lists resources to explore the subject further.
Discover how math applies to the game of baseball, from the distance between the bases to the calculation of players' stats.
Introduces banking and explains services such as savings accounts and loans, banking insurance, and being a dependable borrower; features a glossary; and lists resources to explore the subject further.
Young Pythagoras can't seem to stay out of trouble. Every time he tries to help, people get angry. What's a curious kid to do? On a trip to Egypt, Pythagoras' curiosity helps him discover the secret of the right triangle. A clever introduction to the Pythagorean Theorem.
A Math Adventure! Julie Ellis and Phyllis Hornung Peacock team up once again to explore Pythagorean ratios in this humorous sequel to What's Your Angle, Pythagoras? Pythagoras and his cousins want to win a music contest, but first they must figure out how to play their instruments in tune, something that's never been done before. While trying to fix the problem, Pythagoras makes an important discovery--notes that sound pleasant together have a certain mathematical relationship. When Pythagoras applies this ratio to his cousins' pipes and lyres, the result is music to the ears. This book is good for your brain because: Mathematical problem solving, Ratios, Measuring, Musical Theory, History of Instruments
This book explains how models help us test new designs and to understand living things. The book includes various types of models, such as scale, graphical, conceptual, and computer models, which are used to analyze how we understand different things.
Provides the history of American coins and bills and shows how they have changed over time.
Explores economics and provides real world examples and applications.
Explores how different money is used in different parts of the world.