GeoGebra : Dynamic mathematics http://www.geogebra.org/cms/en/ GeoGebra : Dynamic mathematics & science for learning and teaching
GeoGebra is free and multi-platform dynamic mathematics software for all levels of education that joins geometry, algebra, tables, graphing, statistics and calculus in one easy-to-use package. It has received several educational software awards in Europe and the USA.

Building Geometry : Instructables http://www.instructables.com/tag/type-id/?sort=none&q=geometry Instructables supports teachers by providing free pro memberships and awesome project ideas for your classroom. We provide plug and play hands-on projects to let you supplement your curriculum with the best projects that other teachers have to offer.
You don’t need to be a traditional classroom teacher to participate, either. If you are an after-school teacher, a scouting leader, a librarian who runs programs, or anyone whose job is explicitly educational, you are invited to participate.
Instructables was officially spun out of Squid Labs in the summer of 2006, and has gone on to grow from a modest hundreds of projects to over one hundred thousand.
The community that now calls the site home, is an amazing mix of wonder from around the world. Every day we continue to be amazed by the imagination, curiosity, and simple awesomeness of everyone who shares their creations with us on Instructables.

ck-12 : FlexBook Platform : Geometry http://www.ck12.org/geometry/ ck-12 : FlexBook Platform : Geometry
Free easy to use tools for you, your teachers and your schools so that you can get your learning done.
Free educational resources. USA Standards-aligned and customizable.
Read online, print a copy, or use it on any device. Our content can be used with the Kindle, iPad, NOOK, and more.
Add bite-sized lessons to FlexBooks or assign to students for independent learning.
Videos and multimedia simulations bring learning to life.
Enable students to track their progress with instant feedback.
Get assessments, answer keys and ideas for differentiated instruction.

Bring Geometry to Life with Google SketchUp http://mathforum.org/sketchup/ Bring Geometry to Life with Google SketchUp
The resources on this page will help you bring SketchUp into your classroom
and show you some wonderful projects in 2D and 3D geometry.

Interactive Geometry http://i2geo.net/ Interactive Geometry
GeoSkills is the name of the language with which resources are tagged in topics, competencies, and levels. GeoSkills is an ontology that is collaboratively built.
The Intergeo (I2G) file format aims to be the convergence of the common features of the current DGS together with the vision of future developments and the opinion of external experts. Its final version based on modern technologies and planed to be extensible – to capture the flavour of the different DGS – could serve as a standard in the DGS industry.

Very Creative Geometry Problems http://www.8foxes.com Creative, unusual geometry questions are posted. Different versions of the questions present diverse difficuilty levels.
Users are encouraged to participate, solve, evaluate, comment, and send new questions.

Geometry Videos http://www.math-videos-online.com/geometry-videos.html Geometry Videos
Are you looking for free online geometry videos? Each of the following links takes you to an online video on a particular geometry topic.
Some videos are followed by online quizzes and interactive games designed to reinforce the concepts taught in each movie.

The eyeballing game http://woodgears.ca/eyeball/ The eyeballing game
The game works by showing you a series of geometries that need to be adjusted a little bit to make them right.
A square highlights the point that needs to be moved or adjusted. Use the mouse to drag the blue square or arrowhead where you feel it is 'right'.
Once you let go of the mouse, the computer evaluates your move, so don't let up on the mouse button until you are sure. The 'correct' geometry is also shown in green, so you can see where you went wrong.
You will be presented with each challenge three times. The table to the right shows how you did on each challenge each time.

Geometry from the Interactive Mathematics Miscellany http://www.cut-the-knot.org/geometry.shtml Geometry from the Interactive Mathematics Miscellany
A huge collection of geometric problems and discussions, many with interactive Java illustrations.

Mathematics Geometry Tutorials (recommended) http://nlvm.usu.edu/en/nav/vlibrary.html The National Library of Virtual Manipulatives (NLVM) is an NSF (USA) supported project that began in 1999 to develop a library of uniquely interactive, web-based virtual manipulatives or concept tutorials, mostly in the form of Java applets, for mathematics instruction (K-12 emphasis).
The project includes dissemination and extensive internal and external evaluation.
Math | Maths | Mathematics | interactive | multimedia | Free | Number and Operations | Algebra | Geometry | Measurement | Data Analysis | Probability |

Geometry Help at FreeMathsHelp http://www.freemathhelp.com/geometry.html Geometry Help at FreeMathsHelp
Area of a Circle | Areas, Volumes, Surface Areas | Circumference of a Circle | Graphing Lines | Interior Angles of Regular Polygons | Polygon Basics | Pythagorean Theorem | Slope of a Line | Three-Dimensional Figures |

Tims Triangular Page http://sakharov.net/triangle.html Tim's Triangular Page
All necessary information about triangles for school students

Geometry at AAAMath http://www.aaamath.com/B/geo.htm Geometry at AAAMath - These pages teach geometry facts covered in K8 math courses.
Each page has an explanation, interactive practice and challenge games about geometry.

Aplusmaths http://aplusmath.com Fun, Easy, and Quick to learn activites
Visit our game room and play exciting games like Matho and Hidden Picture...Test your math skills with our Flashcards! Try out the Math Word Find puzzle.
Create and print your own set of flashcards online! Try out the Flashcard Creator. See the Worksheets section, where you can print worksheets to practice offline.

Geometry from the Land of the Incas http://agutie.homestead.com Geometry Step by Step from the Land of the Incas provides an eclectic mix of sound, science, and Incan history intended to interest students in Euclidean geometry. Recent additions include Simson Line (proof of Simson line), The Raft of the Medusa (problem solving with fractals and animation), Archimedes and the Rhombicuboctahedron (Archimedes the Geometer), Sierpinski Triangle and Machu Picchu (fractal illustration), Johnson's Theorem (three equal circles pass through a common point), Varignon and Wittenbauer Paralellograms (quadrilateral: midpoints and trisection points of the edges) and Van Aubel's Theorem (quadrilateral with squares).

Puzzles with polyhedra and numbers http://gfm.cii.fc.ul.pt/people/jrezende/ In this site one can print copies of polyhedron puzzles (for non-commercial purposes only) and one can read several mathematical articles on the subject.

Paper Models of Polyhedra http://www.korthalsaltes.com/ Polyhedra are beautiful 3-D geometrical figures that have fascinated philosophers, mathematicians and artists for millennia.
On this site are more than eighty paper models available for free.
Paper Models of Polyhedra | Platonic Solids | Archimedean Solids | Kepler-Poinsot Polyhedra | Prism and Antiprism | Kaleidocycles | Cylinder | Tapered Cylinder
Cone | Special Cones | "Matryoska house" |
Globe | Chevaux-de-frise | Dodecahedron | Cube and Tetrahedron | Octahedron | Icosahedron | Triangular Prism | Pentagonal Prism | Pentagonal Antiprism | Icosahedron | Compound of Two Cubes | Compound of Three Cubes | Pentakisdodecahedron |

Geometric Shapes and Figures : 4 2 Explore http://www.42explore.com/geomet.htm On each page you'll find definitions, activities, 4 good starting points, and many more links and resources for the thematic topic.
In some cases, we've listed more than four websites on a particular topic. For example, we might provide a few for younger readers and others for more advanced learners.
Each school, classroom, and teacher is unique. As such we didn't try to provide specific activities for particular grade levels. Instead we suggest that teachers explore each link, then design specific, developmentally appropriate activities such as discussion questions, small group activities, or webquests to fit the needs of their curriculum.
The links on this site are safe for children.
Tessellations | Maths | Maths | patterns | pattern |
On each page you'll find definitions, activities, 4 good starting points, and many more links and resources for the thematic topic.
In some cases, we've listed more than four websites on a particular topic. For example, we might provide a few for younger readers and others for more advanced learners.
Each school, classroom, and teacher is unique. As such we didn't try to provide specific activities for particular grade levels. Instead we suggest that teachers explore each link, then design specific, developmentally appropriate activities such as discussion questions, small group activities, or webquests to fit the needs of their curriculum.
The links on this site are safe for children.
Geometric | Shapes | Figures | Geometry |