30 August 1999 Vol. 4, No. 35
THE MATH FORUM INTERNET NEWS
Connecting Geometry  Sanders  Native American Geometry  Math Magic  Friedman
CONNECTING GEOMETRY  Cathleen V. Sanders
http://www.k12.hi.us/~csanders/
An interactive electronic geometry course offered via the
Internet to students throughout the Hawaiian islands. During
the course Cathi Sanders, a teacher at Punahou School in
Honolulu, communicates with students through a Web page and
via email.
The course uses computer technology and the Internet to
explore and discover the principles and concepts of geometry.
Students explore geometric figures using the Geometer's
Sketchpad, practice geometric skills through problemsolving
activities on paper, explore applications of geometry through
the Web, and create projects using these technologies.
Chapters include:
 Communicating in Geometry
 Symmetry and Transformations
 Theorems in Geometry
 Congruent Triangles
 Triangle Properties
 Right Triangles
 Parallel Lines and Planes
 Polygons
 Similar Triangles
 Circles
 Perimeter and Area
 Surface Areas and Volumes
http://www.k12.hi.us/~csanders/topics.html
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NATIVE AMERICAN GEOMETRY  Chris Hardaker
http://www.earthmeasure.com/
Native American geometry is a physical, proportional
geometry that originates from the circle. A growing
body of architectural and iconographic evidence suggests
that this geometry was a relatively common tradition and
has been practiced for at least 2000 years.
The site is divided into four areas: Foundations,
Anthropology, Designs, and Education; it introduces this
twodimensional nonrandom geometry in a connectthepoint
format, exploring the intellectual and cultural implications
of preColumbian geometric traditions in the New World. It
also provides a list of European mathematical ramifications
of the designs.
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MATH MAGIC  Erich Friedman
http://www.stetson.edu/~efriedma/mathmagic/
A site devoted to original mathematical recreations. Send
your math puzzle, discovery, or observation, to the author,
or submit an answer to the problem of the month.
Past questions and solutions are archived. Examples include:
 Divisor Chains
 Integer Square Tilings
 Angle Frequencies
 Disconnected Polyominoes
 Average Arrays
 Convex Spectra
 Surround Numbers
 Palindrome Products
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