## 3-D Geometry & Polyhedra | ||||
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Math Forum's Studying Polyhedra
Interactive: Study the Platonic solids. |
Paper Models of Polyhedra
80+ nets of polyhedral models. |
MatHSoliD Java Applet (Interactive)
All Platonic and Archimedean Solids. |
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NCTM's Illuminations (Interactive)
Geometric Solids and Their Properties: Grades 3-5. |
NCTM's Illuminations (Interactive)
Cubes and Isometric Drawings: Students |
NCTM's Illuminations (Interactive)
Cubes and Isometric Drawings: Teachers |
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The Geometry Junkyard: Unfolded Polyhedra
Links |
Pedagoguery Software Inc. (Interactive)
Free trial downloads |
Math Cats: Geometric Space Forms
Create polyhedral nets with compass and straightedge |
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Straw Polyhedra
Soda staws & string. |
Virtual Polyhedra - An Encyclopedia of Polyhedra
Thousands of virtual reality polyhedra to explore. |
University of Utah
Interactive Platonic Solids via Java applet. |
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## Constructions | ||||

Kocmoud's Constructions | WIMS Ruler & Compass Constructions | MathsNet Interactive Constructions | ||

Grand Valley State: Geometric Constructions | ||||

## Geometry of Nature | ||||

Book: The Geometry of Nature | Pictures: The Geometry of Nature | |||

## M.C. Escher | ||||

MCEscher.com
Escher's official Website. |
The Oldest Escher Collection of the Web
Works by Escher & artists inspired by him. |
MC Escher - Artist or Mathematician ?
Biographical detail and tutorial. |
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## Similar Polygons | ||||

Pink Monkey Notes - Similar Polygons | ||||

## Tessellations | ||||

Math Formum Tessellation Tutorial
Definitions, samples, interactive tessellation engine. |
Tantalizing Tessellations
Ten complete tessellation lessons. |
David Annal's Tessellations.org
History, gallery, do-it-yourself. |
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Science U's Introduction to Tilings and Tessellations
Examples and 2 interactive tessellation engines. |
Cool Math's Tessellation Page
Definitions and examples. |
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## Transformational Geometry & Symmetry | ||||

MathsNet Transformational Geometry Unit
Interactive unit: four levels of instruction. |
Leslie Howe's Transformation Unit
Simple interactive unit. |
NCTM: Congruence, Similarity, and Symmetry
Visualizing transformations: interactive applets. |
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UGA's Transformational Geometry Unit
Ten day unit for Geometer's SketchPad. |
Java Gallery of Interactive Geometry | Gallery of Interactive Geometry | ||

## Pick's Theorem | ||||

Cut The Knot (Interactive)
Applet to demonstrate Pick's Theorem. |
IES Manipula Math Java Applets
279 math applets. 91 in middle school geometry |
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## Geometer's Sketchpad Resources | ||||

How to Choose a Real-World Problem The purpose of this list is to help you choose real-world problems that you can investigate on your own with Geometer’s Sketchpad. |
Geometry Learning Units This site provides a variety of geometry lessons that use real-world problem scenarios. |
How Now Pythagoras? This site provides a fun activity using the Pythagorean theorem for students interested in woodworking. |
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Determining Altitude of Iridium Flares This site provides an activity for students interested in space exploration. Note this activity is more advanced. |
The Goal Angle Problem This site provides a fun activity exploring angles for students interested in soccer. |
Geometry Through Art This site uses art as a means for learning geometer’s sketchpad. |
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Lesson Plans Using GSP This site provides objectives and lesson plans for grades 6-8. These lessons are for use with the Geometer’s Sketchpad. |
Lesson Plans for the Geometer’s Sketchpad This site provides 17 lesson plans that use the Geometer’s Sketchpad. |
GSP Lessons This site provides 13 lesson plans written for use with the Geometer’s Sketchpad. |
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The Geometer’s Sketchpad Equations of Circles This site provides a GSP lesson plan for generating the equation of circles. |
The Geometer’s Sketchpad Introductory Lab This site provides a GSP introductory lesson plan. |
The Geometer’s Sketchpad Modeling a Ferris Wheel This site provides a fun activity for students to learn the GSP animation feature by modeling a ferris wheel. |
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101 Project Ideas for Geometer’s Sketchpad This site provides information for ordering a book from the maker of Geometer's Sketchpad titled "101 Project Ideas for Geometer's Sketchpad." There are also 15 projects available for download directly from this site. |