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flagpole, a crane, an elevator, and window blinds. Award-winning author Michael Dahl delivers fun, fact-filled text for an...... more
Skateboards, roller coasters, and playground slides, all of these are ramps. From award-winning author Michael Dahl...... more
Describes many different kinds, uses, and benefits of wheels and axles. Includes information on gear... more
Provides examples to describe levers as simple machines used to lift, push, or move a load. Includes... more
The fourth edition of Student Teacher to Master Teacher: A Practical Guide for Educating Students wi... more
The pressures of contemporary electioneering force political professionals into "campaign mode"--a s... more