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Identify Functions

1 Warmup

Using this sketch, you’ll distinguish independent and dependent variables.

Worksheet

Which points can you drag?

What do you notice, and what do you wonder?

2 Examples and Non-Examples

Using this sketch, you’ll learn to distinguish a function from a relation that is not a function.

Worksheet

3 Accomplishments

By the end of this lesson, you accomplished several goals:

• Vary variables. You dragged independent points and observed and described the behavior of dependent point(s).
• Distinguish independent and dependent variables. You learned how to tell the difference between independent and dependent variables.
• Distinguish functions and non-functions. You used the drag test to tell the difference between functions and non-functions.
• Define “function.” You formulated and discussed your own definition of function.
• Apply your definition. You used your definition to categorize relations as functions or not functions.
• Use the term “relation.” You became familiar with the term relation to describe variables with a relationship that may or may not be a function.

3 The Fine Print

Requirements:

These activities require web access using a browser that supports HTML5 and JavaScript. (That means almost any current browser.) No purchase is required, and there’s no advertising anywhere.

Release Information

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