Inquiry Discussion of Simple Machines

Jason Olson
Rocori High School
Cold Spring, MN

Summary

This is a guided discussion (in groups and as a class) to direct students to think of complex machines that we use every day as being made up of many simple machines, and to formulate a definition for what a simple machine is. It also groups everyday simple machines into groups of similarities, identifying the six types of simple machines.

Learning Goals

Concepts:
All complex machines are made up of combinations of simple machines.
Simple machines are used in everyday life.
Machines are used to make work easier.

Vocab words:
Simple Machine
Lever (1st, 2nd, 3rd class)
Pulley
Inclined Plane
Screw
Wheel and Axle
Wedge

Context for Use

This should be used as an introduction to talking about simple machines. Depending on how guided discussions are, it could take about 20-30 minutes

Description and Teaching Materials

Students will be in groups, and then will share ideas with each other. Groups will also share with the class, and conclusions will be made as a class. Outline for Simple Machines Discussion (Microsoft Word 2007 (.docx) 12kB Aug25 09)

Teaching Notes and Tips

Students will initially think of machines as complex (i.e. computers, cars, etc.) and may have the misconception that machines require power. It will also help to have actual examples of complex machines for students to examine themselves to determine they are made up of simple machines.

Assessment

Students will come up with their own list of 10 simple machines that they use every day, identifying which simple machine it is.

Standards

There are no specific standards dealing with simple machines.

References and Resources