This book, designed with good science and easy teaching in mind, covers these concepts: Work is done when a force is used to move something over a distance Some jobs take more work that other jobs Machines make work easier Machines may have few, many, or no moving parts The lever is a simple machine The wheel and axle is a simple machine The pulley is a simple machine The inclined plane is a simple machine The screw is a simple machine The wedge is a simple machine Activities help children practice skills in: observation, analysis, communication, making comparisons, prediction, critical thinking, and recording.
(This book; designed; ) (Some jobs; take; more work) (The wheel and axle; is; a simple machine) (The wedge; is; a simple machine Activities help children practice skills in: observation, analysis, communication, making comparisons, prediction, critical thinking, and recording) Context(The wedge is,List([440, 452))):(a simple machine Activities; help; children practice skills in: observation, analysis, communication, making comparisons, prediction, critical thinking, and recording) (Machines; make; ) Context(Machines make,List([197, 210))):(work easier Machines; may have; ) (The lever; is; a simple machine) (The screw; is; a simple machine) (Work; is done; T:when a force is used to move something over a distance) Context(Work is done,List([88, 100))):(This book, designed with good science and easy teaching in mind; covers; these concepts) (The inclined plane; is; a simple machine) (a force; is used; to move something over a distance) (The pulley; is; a simple machine)
The wedge is,List([440, 452)) Machines make,List([197, 210)) Work is done,List([88, 100))
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