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```          MATH TOOLS NEWSLETTER - May 7, 2005 - No. 26

Key Curriculum Press is now offering online courses for
learning how to use The Geometer's Sketchpad (GSP) to
investigate and demonstrate mathematics concepts. Register
for one of the summer sessions that will start on June 13:

http://www.keypress.com/pdc/gsponline/

The Math Tools Technology Problem of the Week (tPoW)
"Types of Triangles" demonstrates one way to teach and
learn with GSP:

http://mathforum.org/tpow/

Technology problems (tPoWs) are modeled on the Math Forum's
Problems of the Week, with the additional feature that the
problems take advantage of an interactive mathematics tool.
After students submit their solutions, they have the
opportunity to view hints and answer checks to help them
think more about the problem and revise their work.

***FEATURED TPOW
Technology PoW: Squares in a Square
http://mathforum.org/mathtools/tpow/18047/
If you have a checkerboard that is 50x50 with small squares
inside it, how many squares will there be all together?
Students use a Java applet from the Freudenthal Institute to
total number of squares is encouraged.

***FEATURED TPOW
Technology PoW: Miranda and the Rookie
http://mathforum.org/mathtools/tpow/18197/
player and the rookie.

***FEATURED DISCUSSION
How technology can enhance math learning
Cynthia writes, "I'd like to hear about how technology

***FEATURED DISCUSSION
Is a rhombus a kite?
Susan asks, "Is a rhombus a kite? Is a square a kite? Any
ideas? Has it changed over the years, or is it just me?"

***FEATURED DISCUSSION
Fraction Track Revisited
Ihor reports, "I'm working on a fractions project with 6th
grade teachers and students. I tried the Fraction Track game
and found it was too difficult/confusing for many of the
students."

***FEATURED DISCUSSION
What is a binomial?
Eric Goolish notes, "Recently, I had a 60 minute discussion
with fellow high school teachers about what is a binomial?"

***FEATURED TOOL
Tool: Jude e-Clock
Nathan Myers
http://mathforum.org/mathtools/tool/17894/
Virtual manipulative for teaching various concepts in
telling time. Features of this multi-faceted tool include the
ability to change the clock's face (two different primary faces,
Roman numerals, 12-3-6-9, and graduated markings only), display
of time in digital format, display of time in word format
("quarter past three", "27 minutes until eight", etc.), as well
as the ability to practice concepts of elapsed time by setting a
"start time" clock and an "end time" clock. Buttons and hands on
clocks are color-coded to help support new or young learners.

***FEATURED TOOL
Tool: Areas of Regular Polygons and Circles
Key Curriculum Press
http://mathforum.org/mathtools/tool/17836/
Students manipulate the number of sides in a regular polygon,
develop a formula relating the area and perimeter of the
polygon, and use their result to develop a formula relating the
circumference and area of a circle. The link to the tool itself
is to a zip file that contains both the sketch and a pdf file of
the corresponding activity.

The combined sketch and pdf activity file are also available
in .sit format. This is a free sample activity from "Exploring

***FEATURED TOOL
Tool: Random Triangles for Discovering Geometry
Paul Myers
http://mathforum.org/mathtools/tool/18063/
Paul Myers created this demonstration as he was designing a
Fathom project for Discovering Geometry. It shows when a
triangle can be formed from the pieces after two random cuts
are made in a 20-centimeter segment.

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/