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Math Forum » Discussions » Courses » ap-calculus

Topic: stop teaching shifting & stretching?
Replies: 14   Last Post: Oct 19, 1998 8:58 AM

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dslomer

Posts: 61
Registered: 12/6/04
Re: stop teaching shifting & stretching?
Posted: Oct 12, 1998 8:50 PM
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>Since my calculus students will have graphers, is it the
>consensus that I should stop teaching my precalculus
>students such tricks to aide graphing as shifting & stretching
>functions and symmetry? I'd love to stop teaching this, because it
>would free time for other "essential" topics, which I do not
>get to.
>
>Bill Larson
>Geneva

We should still teach the concepts but maybe with the aid of the graphing
calculator.

That is, given y=a+b*f(c*x+d), kids still need to know that varying a, b, c,
and d cause predictable changes in the graph of f.


Dave Slomer
Retired AP Calculus teacher
http://www.geocities.com/capecanaveral/lab/8692

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