You are not logged in.
login | register

Discussion: All Topics
Topic: Shodor lessons

Post a new topic to the General Discussion in Algebra on Computer discussion
<< see all messages in this topic
<previous message | next message >

Subject:   RE: Shodor lessons
Author: Craig
Date: Jan 26 2006
Quick versus dynamic, or quick and dynamic.  Either way.

I agree with Mathman that just showing a quick dynamic slider to illustrate the
effects of different parameters in the graph of a function does not lead to the
fundamental understanding that most teachers want and expect from their
students.  In fact, I have not used the "function flyer" applet I mentioned in a
few years, because I didn't think my students needed that level of
visualization.  However, I have had students in the past (and probably will
again) for whom that extra visual step provided just the impetus needed, either
to break through a fog of misunderstanding or as a catalyst for much
higher-order thinking (proving effects of parameters, for example).  Bottom
line, I don't endorse using the function flyer as a cure-all, or a one-shot
"this is how slope works" lesson.  I think a good teacher will hold this tool
for use when it becomes apparent that a student (or class) would benefit from

Here's a slider I'd like to see, just for fun (and I have almost succeeded in
creating one in Geometer's Sketchpad): an "eccentricity" slider.  Slide from 0
through 3, say, and see a conic section change from a circle, through ellipses,
to a parabola, then through hyperbolas.  I can get the effect by using overhead
transparencies with parallel lines and/or concentric circles...

Reply to this message          Quote this message when replying?
yes  no
Post a new topic to the General Discussion in Algebra on Computer discussion
Visit related discussions:
Lesson Plans

Discussion Help