One in, one out is what functions are about in a video explaining the rules and qualities of these relationships. Have your learners practice with ordered pairs, tables, mapping, and graphs, deciphering whether or not those relationships are a function. The examples go through the steps needed to reason whether it is a function or not. 

Concepts

functions, ordered pairs, coordinate plane, tables, vertical line test

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Additional Tags

functions, mapping, ordered pairs, table, vertical line test, math

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Classroom Considerations

• This content requires Adobe Flash to view

Pros

• Multiple types of functions used
• Pause the video to allow learners to try on their own

Cons

• None

Common Core

8.F.A.1 MP2