Re: [MATHEDCC] technology/fractions

Beth M. Krepps (BKREPPS@PSTCC.CC.TN.US)
Wed, 24 Sep 1997 13:13:05 -0400 (EDT)

I am new to this list serve and had really planned to keep my mouth shut
but anyone who knows me knows that is impossible. My department requires
a graphing calculator in developmental algebra and up. We try very hard
to adopt books that integrate technology. Let me just say there are a lot
of textbooks that have tried to jump on the bandwagon of technology but
haven't quite gotten the big picture. I say all that to say this...just
because you allow calculators on exams or the book you use is written for a
calculator doesn't mean you have to except work that is not shown. If I feel
that fractions are an important concept for a particular test you better
believe I will require to see all work. Typically, I have a list of problems
I require to see done 'by hand.' I stress the importance of the calculator
as a checking device and a way to see if the answer makes sense.

I think it is important that we use technology in the classroom because we
can get across mathematical concepts that we never could by mathematical
manipulation. I think there is a balance. Right now I am piloting a
new textbook in a developmental algebra course. (I have galley sheets but
next year it will be in hardback.) I believe the authors have the right
idea. They have what are called discovery exercises. The student is given
a series of problems such as problems with negative exponents and are asked
to calculate the answers using the calculator. They are then asked to look
for a pattern and write a rule for negative exponents. The students seem to
enjoy the book because they 'own' the rules a little more than if I just
told them. (It seems to me a lot of integrated technology books are just
try to teach students when to use the calculator (for big numbers) and when
not too.)

Thanks for listening to my rambling....
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