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13 October 1997 Vol. 2, No. 41 THE MATH FORUM INTERNET NEWS Geometry in Action | Knot Sites | Elementary Teachers' Place GEOMETRY IN ACTION - David Eppstein http://www.ics.uci.edu/~eppstein/geom.html Areas in which ideas from discrete and computational geometry - mainly low-dimensional Euclidean geometry - meet some real world applications. There are brief descriptions of those applications and the geometric questions arising from them, as well as pointers to Web pages and other sources of further information. Topics include: - architecture - computer aided design/manufacturing - computer vision - geographic information systems - graph drawing - medical imaging - origami - textile layout and many more. -|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|- MORE WEB RESOURCES FOR KNOTS UNTANGLING THE MATHEMATICS OF KNOTS - MegaMath http://www.c3.lanl.gov/mega-math/workbk/knot/knot.html A hands-on exploration of the fundmental ideas of Knot Theory, with a variety of activities for exploring knots made from pieces of rope. Students can make and verify observations about knots, classify them, combine them, and find ways to determine whether two knots are alike. The activities outlined can be combined to form a single lesson about mathematical knots, or a larger investigative unit that extends over a longer period of time. The sequence in which the activities are listed is roughly in order of increasing difficulty and challenge, but all of the earlier activities are not strict prerequisites for the later ones. THE KNOTPLOT SITE - Robert Scharein http://www.cs.ubc.ca/nest/imager/contributions/scharein/KnotPlot.html A collection of knots and links, viewed from a partly mathematical perspective. The images were created with KnotPlot, a program designed to illustrate and manipulate mathematical knots in three and four dimensions. Browse the picture gallery and read a description of KnotPlot's features. KNOTS ON THE WEB - Peter Suber http://www.earlham.edu/suber/knotlink.htm A comprehensive list of knot resources on the Web, annotated and organized into four categories: knot tying, knot theory, knot art, and knot books. -|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|- MATH RESOURCES FOR TEACHERS: PRE-K THROUGH 5TH GRADE Online Projects | Lessons | Discussions | Articles - tailored to the elementary level you teach - The Math Forum is pleased to announce a reorganization of our elementary level math resources: - PRE-KINDERGARTEN Teachers' Place: http://mathforum.org/teachers/pre-k/ - KINDERGARTEN - 2ND GRADE Teachers' Place: http://mathforum.org/teachers/elem/k-2/ - 3RD - 5TH GRADE Teachers' Place: http://mathforum.org/teachers/elem/3-5/ At the top of each of these pages you'll see: "This is a new page. What do you think of it?" We invite you to use the form linked to the question to offer your comments and suggestions. -|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|- CHECK OUT OUR WEB SITE: The Math Forum http://mathforum.org/ Ask Dr. Math http://mathforum.org/dr.math/ Problem of the Week http://mathforum.org/geopow/ Internet Resources http://mathforum.org/~steve/ Join the Math Forum http://mathforum.org/join.forum.html Send comments to the Math Forum Internet Newsletter editors _o \o_ __| \ / |__ o _ o/ \o/ __|- __/ \__/o \o | o/ o/__/ /\ /| | \ \ / \ / \ /o\ / \ / \ / | / \ / \ |

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