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Grade 4: Science: Pulleys and Gears
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Machines - Simple and Compound by Rebecca L. Johnson; National Geographic Society (U.S.) Staff (Contribution by)
Publication Date: 2007-03-21
Machines make work easier to do.
Pulleys and Gears by David Glover
Publication Date: 2002-01-01
How can pulling down make something go up? How do carnival rides work? What makes the hands on a watch go around? How does pedaling a bicycle make it move? This title shows you how different kinds of these two simple machines are all around you to make your work and play easier.
Wheels by Chris Oxlade
Publication Date: 2003-07-01
How do wheels work? Why are doorknobs shaped like wheels? Why do buses have big steering wheels? For the answers to these and many other questions, read 'Wheels'. Find out why cars have rubber tires. Learn about a kind of wheel called a gear. Discover how wheels can be used to measure lengths. This book describes what wheels are and how they work, different types of wheels and their uses, and other facts about wheels.
This award winning story that is the predecessor to the Junior Geography Detective Squad (JGDs), 50-state, mystery, trivia series. We meet the characters - Matt Patterson, his sister Mary Beth, Jolene Ariette and Guy Lombard (Matt's best friend). We follow the teams as they are on a party train looking for clues leading to a mystery destination. Where will the "Train of Clues" take you?
Machines We Use by Sally Hewitt
Publication Date: 1998-09-01
It's Science! introduces the reader to the basic concepts of physical science covered in the first years of school.
Idea Sketch is a free app that lets you easily draw a diagram - mind map, concept map, or flow chart - and convert it to a text outline, and vice versa. You can use Idea Sketch for anything, such as brainstorming new ideas, illustrating concepts, making lists and outlines, planning presentations, creating organizational charts, and more!
Have you ever done a science experiment and wondered "What would this be like if it were HUGE?" Welcome to Science Max, the exciting new series that turbocharges all the science experiments you've don…