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4434ScienceU--Geometry Center
http://www.merlot.org/merlot/viewMaterial.htm?id=75574
The Geometry Center contains a variety of appealing material, both textual and visual, including interactive exhibits, simulations, graphics software and a library of reference materials pertaining to geometric tilings and polyhedra.National Library of Virtual Manipulatives
http://www.merlot.org/merlot/viewMaterial.htm?id=76833
Large collection of platform independent, interactive, java applets and activities for K-12 mathematics and teacher education.Dimensions (geometry)
http://www.merlot.org/merlot/viewMaterial.htm?id=350912
This is a free, online textbook that provides information on dimensions, from longtitude and latitude to the proof of a theorem of geometry. There are 9 chapters, each 13 minutes long. The book contains a total of 117 minutes of video, but can also be read as an ordinary textbook.The film can be enjoyed by anyone, provided the chapters are well-chosen. There are 9 chapters, each 13 minutes long. Chapters 3-4, 5-6 and 7-8 are double chapters, but apart from that, they are more or less independent of each other.Isometric Drawing Tool
http://www.merlot.org/merlot/viewMaterial.htm?id=82381
This java applet simulates drawing block and mat diagrams on isometric dot paper. Part of the NCTM Illuminations project.Kunkel's Mathematics Lessons
http://www.merlot.org/merlot/viewMaterial.htm?id=75453
This is a collection of Geometer's sketchpad applets with description. Even without Geometer's sketchpad the pages are very informative.Thales of Miletus
http://www.merlot.org/merlot/viewMaterial.htm?id=88217
Biography of Thales of Miletus (624BC-547BC)Manipula Math - Geometry II
http://www.merlot.org/merlot/viewMaterial.htm?id=89923
A page of Java applets to demonstrate basic geometry.GeoGebra
http://www.merlot.org/merlot/viewMaterial.htm?id=434072
GeoGebra is dynamic mathematics software for all levels of education that brings together geometry, algebra, spreadsheets, graphing, statistics and calculus in one easy-to-use package. GeoGebra is a rapidly expanding community of millions of users located in just about every country. GeoGebra has become the leading provider of dynamic mathematics software, supporting science, technology, engineering and mathematics (STEM) education and innovations in teaching and learning worldwide.Thales' Circle
http://www.merlot.org/merlot/viewMaterial.htm?id=88216
Thales' Theorem: A triangle inscribed in a semicircle is right.Encouraging Mathematical Thinking, Discourse around a Rich Problem
http://www.merlot.org/merlot/viewMaterial.htm?id=88039
This videopaper by the Math Forum's Bridging Research and Practice Group (BRAP) of teacher practitioners and Math Forum Staff opens a conversation around the use of discourse as a basis for encouraging students' mathematical thinking and supporting teachers' professional growth. Reflecting an attempt to integrate practice and research, it reports on findings culled from discussions of research articles and chapters, classroom practice, and videotapes of classroom teaching, noting links between these findings and research into student learning and instruction. Video clips from the teachers' classrooms illustrate the interventions discussed; a challenge problem and lessons for various levels are detailed; corresponding student predictions are presented; and readers' reactions and input are encouraged throughout.