Discusses how money was used throughout history.
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.
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.
T is for a Time Alphabet uses poetry and expository text to explore the concept of time, from explaining basic units of measurement to showcasing important scientific achievements. Topics include famous inventors (Albert Einstein and John Harrison) and important structures and landmarks (Kulkulkan Pyramid and Big Ben). Budding scientists will discover what world-famous stone structure is believed to be an early calendar, follow the voyages of explorer Ferdinand Magellan to better understand the International Date Line, and learn to tell time using the Zulu time system.
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
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.