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```        MATH TOOLS NEWSLETTER - OCTOBER 2, 2004 - No. 19

At the end of September we added several new features. Each
individual resource page now identifies the resource's language
and cost, if any. It will take a little time to edit the resources
already in Math Tools but we're working on it. In fact, we could
use your help! If you notice a resource that should be marked as
a commercial resource, please let us know.

We've also added a number of new Technology Types, so our full
list now includes:

Calculator
Texas Instruments
Computer
Cabri
Computer Algebra Systems
Mathematica
Fathom
Flash
Java Applet
JavaScript
Presentation software
PowerPoint
Shockwave
Excel
PDA
Palm OS
PocketPC

If you have tools that you can suggest for any of the courses,
feel free to tell us about them.

Submit a Resource to Math Tools
http://mathforum.org/mathtools/util/tool_submit.html

***FEATURED TOOL
Tool: Cabri Geometry II Plus
Jean-Marie Laborde
http://mathforum.org/mathtools/tool/15463/
A geometry construction tool allowing users to produce figures
in the same way as one would using a sheet of paper, pencil,
ruler, compass, and eraser.

***FEATURED TOOL
Tool: Sandwiches and Shakes
Don Drummond
http://mathforum.org/mathtools/tool/15246/
This is a short PowerPoint that visually explains composition
of functions using sandwiches and milk shakes.

***FEATURED ACTIVITY
Tool: Graphing Linear Equations
Suzanne Alejandre
http://mathforum.org/mathtools/activity/15462/
Step-by-step directions to use ImagiGraph software on a Palm OS
handheld. Students create, investigate, and learn about graphs
of linear equations.

***FEATURED DISCUSSION
Teaching the Concept of Functions
Susan asks, "What are some ways that you teach this with meaning?
Do you have an analogy that really works for kids? What about
composition of functions..."

***FEATURED DISCUSSION
Exponents
PWR writes, "I always have trouble teaching exponents. Does
anyone have ... anything at all that helps students...?"

CHECK OUT THE MATH TOOLS SITE:

Math Tools  http://mathforum.org/mathtools/
Register  http://mathforum.org/mathtools/register.html
Discussions  http://mathforum.org/mathtools/discuss.html
Research Area  http://mathforum.org/mathtools/research/
Developers Area  http://mathforum.org/mathtools/developers/