ED
=================
>The first day in Calculus II, I ask students to tell me what a derivative
>is in one or two sentences without using the word "slope".
>
>
>
>At 07:49 AM 6/23/99 -0400, Edward Laughbaum wrote:
>>At 08:36 PM 6/22/99 -0400, Bret Taylor wrote:
>>>Question about the test.
>>>
>>>Interesting how we all look at words in different ways. The math question
>>>talks about a "rate of increase" in wages. Does anybody else use that
>>>phrase. I generally talk about "percent increase."
>>[snip]
>>
>>
>>
>>When teaching courses below calculus:
>>I always use the words "rate of change", "average rate of change", "rate of
>>increase", "rate of decrease", "how fast something is increasing", etc.
>>
>>The only time I might use "slope" is when the focus is teaching the linear
>>function. Even then I use many of the above.
>>
>>
>>Ed
>>
>>PS: I have not looked at the test yet, and none of my wording references
>>percent change. Although, we may need to represent a rate in percent form
>>on occasion.
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>
>Lawrence G. Gilligan
>Professor of Mathematics
>
>University of Cincinnati
>OMI College of Applied Science
>2220 Victory Parkway
>Cincinnati, OH 45206
>
>
>(513) 556-4868
>
>FAX: (513) 556-4878
>
>http://www.uc.edu/~gilligan
>
Edward D. Laughbaum
The Ohio State University
Department of Mathematics
231 West 18th Avenue
Columbus, OH 43210
Associate Director, The Ohio State University Technology College Short
Course Program
Associate Director, Ohio Early Mathematics Placement Testing Program
Director, AMATYC Outer Banks Summer Institute "Teaching in Context"
Emeritus Professor of Mathematics
(O) (614) 292-7223 or (614) 292-9504
(FAX) (614) 292-0694
http://www.math.ohio-state.edu/~elaughba/
http://www.math.ohio-state.edu/shortcourse
http://www.empt.org
http://www.amatyc.org/SumInst/1998-1999/OuterBanks/OuterBanks.html
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