This activity challenges students to strengthen their ideas about range. Many students who can correctly indicate the range of, say, y=x^{2} using formal mathematical notation may still cling to some mistaken ideas. For example, students commonly say that π is not in the range of y=x^{2} because they cannot think of a number that, when squared, gives π.
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Free-Range Functions
This activity challenges students to strengthen their ideas about range. Many students who can correctly indicate the range of, say, y=x^{2} using formal mathematical notation may still cling to some mistaken ideas. For example, students commonly say that π is not in the range of y=x^{2} because they cannot think of a number that, when squared, gives π.
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