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20 December 2004 Vol. 9, No. 51 THE MATH FORUM @ DREXEL INTERNET NEWS Spidron System - Erdely | Intriguing Tessellations - Rice Teaching Guide - Japanese Course of Study SPIDRON SYSTEM - Daniel Erdely http://www.szinhaz.hu/edan/SpidroNew/ Since we originally featured his work in August of 2002, Daniel Erdely has developed more spidrons -- planar, plane-filling objects. Undergoing a three-dimensional deformation, the planar system generates a regular, dynamic, geometrical construction. Read about the general concept, and view examples of Erdely's work in: - Tilings - Reliefs - Fractals and Variations - Polyhedra - Dissections - Spacefilling - Transformations -|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|- INTRIGUING TESSELLATIONS - Marjorie Rice http://tessellations.home.comcast.net/ Marjorie Rice started investigating tessellations after reading an article by Martin Gardner. Intrigued by his question about whether there were any new pentagon types that would tile a plane, she discovered four, which she illustrates on her site. -|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|- ELEMENTARY SCHOOL TEACHING GUIDE FOR THE JAPANESE COURSE OF STUDY: ARITHMETIC (GRADES 1-6) http://www.globaledresources.com/products/gerbook.html Since the release of the results from the Third International Mathematics and Science Study (TIMSS), there has been an increased interest in Japanese mathematics education practices. The 1989 Japanese National Course of Study was translated by the Japan Society of Mathematical Education and included in the TIMSS Resource Kit. Now the accompanying Teaching Guide has been translated and is available for purchase from Global Education Resources, Inc. You can download free sample pages of the Teaching Guide as a PDF file. The sample pages include the Table of Contents, Overview of the Objectives and Contents of the [K-6] Numbers and Calculations strand (from Chapter 2), and Contents of First Grade: Numbers and Calculations (from Chapter 3). http://www.globaledresources.com/products/ESTGsample.pdf \|/ RESOURCES ON THE WORLD-WIDE WEB THIRD INTERNATIONAL MATHEMATICS AND SCIENCE STUDY (TIMSS) http://ra.terc.edu/resources/assessment/timss.html This site compiled by the Regional Alliance at TERC includes ordering information for the TIMSS Resource Kit. -|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|- CHECK OUT OUR WEB SITE: The Math Forum @ Drexel http://mathforum.org/ Ask Dr. Math http://mathforum.org/dr.math/ Problems of the Week http://mathforum.org/pow/ Mathematics Library http://mathforum.org/library/ Math Tools http://mathforum.org/mathtools/ Teacher2Teacher http://mathforum.org/t2t/ Discussion Groups http://mathforum.org/discussions/ Join the Math Forum http://mathforum.org/join.forum.html Send comments to the Math Forum Internet Newsletter editors Donations http://deptapp.drexel.edu/ia/GOL/giftsonline1_MF.asp Ask Dr. Math Books http://mathforum.org/pubs/dr.mathbooks.html _o \o_ __| \ / |__ o _ o/ \o/ __|- __/ \__/o \o | o/ o/__/ /\ /| | \ \ / \ / \ /o\ / \ / \ / | / \ / \ |

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