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
Everyone is a trader in the world of trade! While most readers use money to trade things, people used to barter and bargain! Teach young readers how they can trade things every day by buying or selling goods and services. Vibrant images, practical examples, diagrams, and mathematical charts all make it fun and easy to learn more about trading. Children will learn about all sorts of markets, including floating markets, online markets, and the stock market. This book introduces readers to the world of commerce, encouraging them to practice number patterns and various mathematical and STEM skills.
Take a trip to the fire station to learn how firefighters use measurement to put out fires! This engaging title takes young readers through the history of firefighting and the development of fire engines, teaching them how firefighters have measured extinguishing water throughout the years. Firefighters used to carry three-gallon buckets of water to toss on a fire! Some old water tanks held 90 gallons of water! These fun facts, paired with related practice problems, help readers learn more about measurement, volume, perimeter, and STEM topics.
What did people use to buy things before money was invented? Where is money made? Find out in this inviting book that informs readers about coins, paper money, the Federal Reserve, exchange rates, and checking accounts. Featuring a timeline of money's history, detailed photos, stimulating facts, clear, informational text, and a glossary that will assist in improving vocabulary, readers will be stimulated from cover to cover.
Leo is a genius. His pet cat named Pallas is not! But together they come up with some brilliant inventions. Full of brainy ideas and way ahead of his (Stone Age time, Leo tackles inventions that will change the way people live and work for hundreds of years to come. STEM (Science, Technology, Engineering and Maths) forms an important focus of learning in schools worldwide.
Introduces readers to the fundamental concepts of a twenty-dollar bill, highlights various security features, and explores its history. Additional features to aid comprehension include labeled diagrams, critical-thinking questions, fun facts, a map of where money is made, and a profile of Andrew Jackson, whose face marks the front of the twenty-dollar bill.