Drexel dragonThe Math ForumDonate to the Math Forum



Search All of the Math Forum:

Views expressed in these public forums are not endorsed by Drexel University or The Math Forum.


Math Forum » Discussions » Education » math-teach

Topic: Graphing Calculators - for graphing
Replies: 8   Last Post: Nov 2, 1995 11:33 PM

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ]
Steve Cottrell

Posts: 97
Registered: 12/6/04
Graphing Calculators - for graphing
Posted: Nov 2, 1995 9:48 AM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

Much of the discussion on graphing calculators that has appeared here
lately has wandered away from the subject of graphing. One of the
teachers in my district shared the following story of a student in
his class that illustrates the benefit we all hope would come from
graphing experience. The story is second hand so I may have some
details wrong, but the point accurately reflects the student's work.

His student had just completed the AP Exam (1994) and commented to
him regarding one of the problems, "Of course the graph was a
parabola that turned down, so I proceeded to ..." (Recall that the
1994 exam did not permit use of graphing calculators.) The teacher
interrupted with "How did you recognize it as a parabola having
the properties you describe so quickly?"

The student answer was that he had graphed so many parabolas in
classwork both that year and the previous year that recognition was
immediate and that the details were obvious from his considerable
experience. (End of story.)

My point is that even though I took an analytic geometry class 35
years ago and taught courses which included analytic geometry for many
years, I have far less experience with graphs that I created than most
students who use graphing calculators today have in a few days in
their classrooms.

It's starting to happen. Students are beginning to be able to
recognize functions from algebraic, graphic, tabular, and yes, even
verbal forms, and make tranisitions from one format to the other.
The progress of students is amazing.





Steve Cottrell
Mathematics Supervisor K-12
Davis School District
45 East State Street
Farmington, UT 84025

Phone 801-451-1123
Fax 801-451-1333






Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© Drexel University 1994-2014. All Rights Reserved.
The Math Forum is a research and educational enterprise of the Drexel University School of Education.