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Experience Geometry on your desktop and on the web Easily create startling geometric constructions! Starting from simple triangle relations, continuing with trigonometric theorems up to fractals and transformation groups Cinderella lets you create and manipulate visualizations in an intuitive, yet powerful way. Using Java® technologies, constructions are seamlessly exported to the WWW. And even better: you can get this for free!

A good collection of maths questions and visual blocks to solve them. Topics include addition, multiplication, fractions and ratios. http://ictmagic.wikispaces.com/maths

"Visualize your numbers, explore charts, and share insights with others. " Great data source. Students can explore data sets, identify different ways of representing data, as well as identify different characterisitics of data.

Middle school, High school, and College level math visualizations - may be useful on IWB.

This is a collection of interactive lessons from a Grade 4 Math course developed by Winpossible - the course uses an innovative instruction format by combining an engaging animated character's visual and voice with Winpossible's unique ChalkTalk™ technology (patent pending) in order to replicate the "classroom experience" for students. The course matches with the Grade 4 correlations of most states in the US.

Pi Cubed is a visual math application for the iPhone / iPod touch that lets you perform calculations as you would on a piece of paper. By using an animated, touch-based interface, even the most complex mathematical expressions can be entered and instantly evaluated. These expressions are typeset as they would be in a textbook or on a blackboard. Calculations are displayed with up to 34 digits of decimal precision. Additionally, a library of over 150 equations ships with the application.

GeoGebra: Do the Math is a series of screencast tutorials for teachers and/or students. The tutorials were initiated as a project to support Maine math teachers in the integration of technology in the classroom. What is GeoGebra provides an overview of the program and its capabilities. Several tutorials present the program's menu options and tools in step-by-step format. Another group of tutorials provides examples of GeoGebra learning activities in major math content areas. These tutorials are intended as a visual supplement to printed guides and documentation. GeoGebra users can find a wealth of guidance and examples at www.geogebra.org. A web search such as "GeoGebra Pythagorean Theorem" will yield hundreds of additional articles, examples, and applets.

Abstract: "Human adults from diverse cultures share intuitions about the points, lines, and figures of Euclidean geometry. Do children develop these intuitions by drawing on phylogenetically ancient and developmentally precocious geometric representations that guide their navigation and their analysis of object shape? In what way might these early-arising representations support later-developing Euclidean intuitions? To approach these questions, we investigated the relations among young children's use of geometry in tasks assessing: navigation; visual form analysis; and the interpretation of symbolic, purely geometric maps. Children's navigation depended on the distance and directional relations of the surface layout and predicted their use of a symbolic map with targets designated by surface distances. In contrast, children's analysis of visual forms depended on the size-invariant shape relations of objects and predicted their use of the same map but with targets designated by corner angles. Even though the two map tasks used identical instructions and map displays, children's performance on these tasks showed no evidence of integrated representations of distance and angle. Instead, young children flexibly recruited geometric representations of either navigable layouts or objects to interpret the same spatial symbols. These findings reveal a link between the early-arising geometric representations that humans share with diverse animals and the flexible geometric intuitions that give rise to human knowledge at its highest reaches. Although young children do not appear to integrate core geometric representations, children's use of the abstract geometry in spatial symbols such as maps may provide the earliest clues to the later construction of Euclidean geometry. "

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"A great set of algebra puzzles, including visual, word and draggable puzzles."

This tool enables K-6 students to build visual models of word problems. There are hundreds of built-in math problems covering thirty-six different categories. Videos explain how to model each problem type. The full screen feature makes this application compatible with interactive white boards.

This is an incredible collection!!!

(Access to full text requires subscription or purchase.) First volume in a new series, Mathematics Education in the Digital Age, features chapters on collaborative learning and new technologies, abstracts available.

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An exhibit of Benoit Mandelbrot's fractal images on display at Bard Graduate Center in New York City

"This book explores 20 geometric diagrams that play crucial roles in visualizing mathematical proofs."

"Research has been conducted on how to aid blind peoples' perceptions and cognition of scientific data and, specifically, on how to strengthen their background in mathematics as a means of accomplishing this goal. In search of alternate modes to vision, researchers and practitioners have studied the opportunities of haptics alone and in combination with other modes, such as audio."

The deficit is a key consideration for all parties as the federal government brings down its budget. Use the chart to explore Canada's budgetary surplus and deficit history, including revenue and expenditure figures for every fiscal year from 1963-1964 to 2010-2011. Select a prime minister's name on the left-hand side to highlight figures from his time in office.

This Flickr group (which I just started) has "bad graphs" which I am collecting as a resource for math educators. Please apply to join the group if you are interested in adding your own resources to it. Otherwise, feel free to use the graphs and data visualizations we've collected.

How Many Really? compares the number of people involved in key historical events or situations to the people you know through Facebook or Twitter. You can also add your own numbers - for example, the amount of students in your class. Choose a story to get started.

Mona Gray is a 20-year-old loner who, as a child, turned to math for salvation after her father became ill. As an adult, Mona now teaches the subject and must help her students through their own crises.

I wish we could add tags to other people's items without overwriting their authorship!

Steven, you shared a link and I wanted to add a tag to it. However, Diigo does not have a separate "add tag" function. The only way to add a new tag is to share the same link to the group, again. However, it overrides the author - now the link says "Shared by Maria Droujkova" even though you linked it first. I hope it makes sense. We discussed it with Darren when I first started to use Diigo Groups: http://groups.diigo.com/group/math-links/content/can-you-add-tags-to-other-people-s-bookmarks-959243

Hi Maria, thank you for the clarification. I now understand your first comment.