# 9.4: Student Prerequisites

This lesson reintroduces the concepts of stress, strength, deflection, and point of failure while introducing the terms allowable stress, bending stress, and factor of safety. The concepts are studied using mathematical and experimental models.

Students must understand the concepts of force and mass at a basic level, be well-versed in algebra, have a working knowledge of trigonometry, and be able to graph and interpret line plots and histograms. They must be aware of and follow lab safety rules and procedures.

For students that may lack background in some of the concepts covered in this lesson plan, http://www.khanacademy.org is an excellent source for background information. For example, the link below explains histograms:

http://www.khanacademy.org/video/histograms?playlist=ck12.org+Algebra+1+Examples

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Jul 27, 2012## Last Modified:

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