Are there different types of pulleys? Can pulleys affect forces and motion? How can pulleys be made using household items? Look at everything from historical examples of this simple machine, such as a block and tackle, to the role of pulleys in more complex machines, such as a motorcycle.
"A hands-on approach introduces young scientists to the lever. Science theory and practical, fun projects teach the physics and the technology behind this simple machine. Important science curriculum is explained through historical and contemporary examples of levers. Step-by-step projects range from the simple to the more challenging."--
Pulleys are simple machines that have many uses, from lifting an injured boater into a rescue helicopter to drawing a bucket of water from a well! This book explains the science behind this helpful machine. Experiments, presented step-by-step and with photos, encourage students to engage with the pulleys in their own lives.
What pulls a flag up a flagpole? How does a bicycle chain help the bicycle move? What makes an escalator move? Pulleys and gears are simple machines that can be used to make other machines work. When you take an escalator, ride in a car, use a fishing rod, or wear a watch you are using pulleys and gears. Pulleys and Gears explains what these machines are and how they help you do everyday things.
Aiming to bring the fun back into teaching and learning science with things that slide, pivot, turn, rub and work, this book offers help to teachers in presenting scientific principles and simple mechanics through hands-on, co-operative learning activities. Using inexpensive materials (for example, tape and paper clips), students at grades 3-8 should be able to learn to build simple machines, such as levers, pulleys, spring scale, gears, wheels and axles, windmills and wedges. Experimentation with these gadgets demonstrates how things work.
Reproducible activities, correlated to the National Science Education Standards, that engage students' minds as they observe, examine & investigate the concepts of force, work, power, efficiency, mechanical advantage, and ramps, wedges, levers, pulleys & gears.
Machines make everyday life easier! Do you know that building your own machine is simpler than you think? Learn about two simple machines, the lever and pulley. See science at work in the real world and use what you learn to figure out how to get a 700-pound piano to the second story of a building! Includes a note to caregivers, a glossary, a discover activity, and career connections, as well as connections to science history.