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```    MATH TOOLS NEWSLETTER - AUGUST 7, 2009 - No. 78

As you browse the catalog, please take a moment to rate a
resource, comment on it, review it -- join an existing
conversation, or start a new discussion!

***FEATURED DISCUSSION
Math Worksheet Generators
Sean_Wilson asks, "I am a math teacher and was putting up
a website to provide free worksheets to my students and
anyone else. I began creating worksheets with microsoft
Excel then I thought (there's got to be an easier way)....
What would I do to add this functionality to a website?"

***FEATURED SUPPORT MATERIAL
Support Material: Pascal's Triangle
http://mathforum.org/mathtools/support/84090/
Math Images
This Math Images page catalogs an image of Pascal's Triangle
along with a basic description, mathematical explanations,
and references.

***FEATURED TOOL
Tool: Math Images Tool: Pascal's Triangle
http://mathforum.org/mathtools/tool/84089/
Emily Goldberg
This Flash animation, developed as part of the Math Images
project, allows users to explore some of the patterns present
in Pascal's Triangle.

***FEATURED TOOL
Tool: Parametric Surfaces in Cylindrical Coordinates
http://mathforum.org/mathtools/tool/83945/
This applet graphs a parametric surface defined in cylindrical
coordinates. Enter parametric formulas for the theta, r, and z,
and the grapher draws the corresponding surface in 3D. The user
can then rotate the surface in real time, and change its
opacity. An older version of the grapher includes a few
interesting practice problems.

***FEATURED TOOL
Tool: Function Grapher
http://mathforum.org/mathtools/tool/83220/
One of these function graphers graphs two functions at a time
and traces them; the other graphs three functions at a time.

***FEATURED TOOL
Tool: The translation transformation - Math Open Reference
http://mathforum.org/mathtools/tool/82993/
John Page
A web page and interactive (Flash) applet demonstrating the
translation transformation. Drag the vertices of a given
triangle, and the translated image of the triangle is
updated as they drag. A translated image can be dragged around
to see that it moves on the plane but does not change its
shape or orientation.

***FEATURED TOOL
Tool: Area and perimeter of a rectangle (Coordinate
Geometry) - Math Open Reference
http://mathforum.org/mathtools/tool/82988/
John Page
A web page and interactive (Flash) applet demonstrating the
reflection transformation. Drag the vertices of a triangle
and re-position the line of reflection. The reflected
image of the triangle is updated as they drag.

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