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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
 http://mathforum.org/mathtools/discuss.html?&do=m&thread=__hl_tool__g-1
 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/
 Barbara Kaskosz and Doug Ensley
 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/
 Barbara Kaskosz and Doug Ensley
 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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              The Math Forum @ Drexel -- 7 August 2009