either hosted at
http://www.geogebra.org/en/upload/index.php?&direction=0&order=&directory=english/lewws (Old Geogebra Wiki)
or at lesson pages of https://sites.google.com/a/moe.edu.sg/dmnteachgeogebra/
or applets grouped by topics at https://sites.google.com/site/dmnlearn/Home/geogebra-applets-for-math/geogebrabytopics
Angle Properties of Polygons (regular polygons illustrated)
Straight Line Graphs-LessonAid For explaining x, y pair of values being plotted as a point (x,y), gradient and intercept.
Trigonometry- General Angles, Reference Angle (Basic Angle) and Trigonometric Ratios of General Angles
Angle Properties of Circles - Tangents to External Point (Done by pupil, April 2008)
Finding Equation of Perpendicular Bisector between Two Points
Applets by others (Selected based on relevance to Singapore curriculum /recommended lesson activities <= click to access
OTHER NOTES :
If you wish to download the above Geogebra applets, you may go to the link at http://www.geogebra.org/en/upload/index.php?&direction=0&order=&directory=english/lewws
Applets at Geogebra wiki (with further links to many other resources)
Geogebra is open source and free software with many people contributing ideas to improve it. Many features have been added reqularly, faster than many commercial software.
Big advantage to pupils is that they can install it at home free or even go online to access applets without installing Geogebra, only needing Java in their browser. For more information to to site at http://www.geogebra.org/cms/
Download latest/archived versions of Geogebra at http://code.google.com/p/geogebra/downloads/list
Daniel Mentrard's Mathematics Site at http://dmentrard.free.fr/GEOGEBRA/Maths.htm
Science site at http://dmentrard.free.fr/GEOGEBRA/Sciences/accueilscie.htm
Many many very well designed applets available (French language)
Direct link to ggb files at http://www.geogebra.org/en/upload/index.php?direction=&order=&directory=001FRANCAIS/DMentrard&
Latest Link (5 March 2015) http://archive.geogebra.org/en/upload/index.php?&direction=0&order=&directory=001FRANCAIS/DMentrard
Direct link to Math files at http://dmentrard.free.fr/GEOGEBRA/Maths/
Direct link Science files at http://dmentrard.free.fr/GEOGEBRA/Sciences/Physique/
Other files at http://dmentrard.free.fr/GEOGEBRA/ggbtruc/
Direct link Science Physics Experiments http://dmentrard.free.fr/GEOGEBRA/Sciences/Excelelabo.htm
Daniel's Geogebra Blog on animations and scripts http://dmentrard.blogspot.com/2011/11/parametes-danimations-avec-geogebra.html
Malin Christersson's excellently organized with many well designed applets organized by geometry, trigonometry, functions, statistics etc. A++ http://www.malinc.se/math/
Duane Habecker's excellent set of ggb applets on ratio, proportion, lines and angles, areas of plane figures, fractions, decimals and percent at http://126.96.36.199/~dhabecker/geogebrahtml/
Measuring angles between lines with a "protractor" (image) http://188.8.131.52/~dhabecker/geogebrahtml/protractor_practice/protractor_practice.html
Irina Boyadzhiev's well designed and categorized applets at Ohio State University Lima : http://www.lima.ohio-state.edu/people/iboyadzhiev/MyGeogebra.htm
Phil's (LPH) wikispaces on Geogebra resources for Physics at https://lphwikispace.wikispaces.com/Applications+3D+Pour+La+Physique
GEOGEBRA TUTORIALS (ONLINE)
Try out learning Geogebra on your own. Click on the captions hyperlinked below.
GEOGEBRA TUTORIALS on Geogebra Wiki (New Wiki) 's Tutorial Main Page
Learn and Use GeoGebra at PBWiki or Learn and Use GeoGebra at WikiSpaces by Linda Fahlberg-Stojanovska
Tutorial on Create a Classroom Wiki for Mathematics with GeoGebra at WikiSpaces by by Linda Fahlberg-Stojanovska
Geogebra by Example Workshop by Don Spickler, Salisbury University - Good introductory tutorials with examples for various topics eg Geometry, Trigonometry, Algebra.
Geogebra on You Tube http://www.youtube.com/user/GeoGebraChannel
Many applets shown on the You Tube - Ideas on teaching by Linda Fahlberg-Stojanovska
Geogebra on Facebook http://www.facebook.com/geogebra
GEOGEBRA WORKSHOP HANDOUTS/ MANUALS FOR DOWNLOAD
CEMTL site with Geogebra training workbooks - excellent workbooks, similar to those by M Hohenwarter.
Geogebra Constructions by Judith and Markus Hohenwarter, Modified ever so slightly by Mark McClure
Geogebra in 10 Lessons by Gerrit Stols
Tutorial on Embedding Geogebra applet in Google Site with Geogebra Gadget (written by Lew W.S).
GEOGEBRA CONFERENCE MATERIALS
GEOGEBRA RESOURCES BY SPECIFIC TOPICS
Transormation of Functions (by Daniel Mentrard
Trigonometric Functions by AB Cron.
Good resource on basic algebra self practice
Barrie Barnard & Gerrit Stol, 2009
Calculus Applets using GeoGebra by Marc Renault - Excellent applets which enable pupils to visualize and connect the mathematics of change
Examples of statistics activities with GeoGebra by Mike May
INTERESTING/AMAZING GEOGEBRA APPLETS
Simulation of 4 stroke engine using Geogebra !!! by Peter Tierney
Geogebra animations links (Geogebra UserForum discussion thread)
A series of Geogebra animations by PGvdVeen
By Daniel Mentrard
http://www.geogebratube.org/student/m4198 --- Worksheet with Onclick show text for image "hotspot" created using polygon tool.
Example of drag and drop matching exercise http://dmentrard.free.fr/GEOGEBRA/Maths/Fonctions/filler/MultiMD.htm
Bernice's blog where she's Making Art with Mathematical Equations and Inequalities http://benice-equation.blogspot.com/
Other Amazing Applets at Geogebra Wiki English
Learning polar coordinates through a radar simulation game by Daniel Mentrard (applet takes time to start)
Edward Or (Hong Kong Education Bureau) contributions on Geogebra Tube
GEOGEBRA in 3D
Student Portfolios related to Geogebra
OTHER IMPORTANT GEOGEBRA DEVELOPMENTS
Geogebra Mobile - Enable applets to be run on IPad, Android devices
Geogebra Live - for online collaboration between 2 or more persons simultaneously
JOURNALS RELATED TO GEOGEBRA RESEARCH & DEVELOPMENT
Geogebra Related Conferences Worldwide
Geogebra users/sites in Singapore (link to email list Geogebra Users Singapore)
Ms Ang, HCI
http://www.aace.org/conf/glearn/sessions/index.cfm/fuseaction/PaperDetails?presentation_id=47682 Paper presented by HCI lecturers
Mr Sunny Chan, Guangyang Secondary School (Singapore), 2011
Discussions on suitability of Geogebra for teaching and learning as compared with Geometer Sketchpad/Cabri
Read particularly Geoff Roulet's balanced overview of the issues such as Euclidean Geometry approach vs calculus analytic geometry approach (current math approach in our curriculum.
Many contributors (professors in mathematics and Geogebra users) give their opinions.
Scott Steketee of Key Curriculum Press (Developers of Geometer SketchPad (GSP), 2010.
Geogebra Forum topic: Why is GeoGebra successful?
TRAINING IN USE OF GEOGEBRA (For Dunman Secondary School Colleagues) July to December 2010
Consider the various scopes of learning Geogebra for yourself :
Level 1. Basic Knowledge (1 hour)
Familiarizing with how to access Geogebra applet resources from the internet, and the various sites providing such resources.
Operating the applet, and knowing how to do basic constructions, basic graphing of functions, measurement of lengths, angles, and gradients of lines.
Using sliders to change values of variables dynamically.
With this basic knowledge, you can explore the available applets and decide which are suiltable for your pupils to use.
Level 2. Learning to Customize Applets for Pupil Learning (3 hours)
Using sliders, hide/show checkboxes, animation and other features to change displays and values of variables dynamically so as to create exploratory lesson tools in functions, geometry, trigonometry and basic construction for pupil learning. Uploading applets onto Geogebra Wiki site for pupil free access.
With the skills above, one can confidently carry out design of even the lesson tool (Geogebra applet)
Level 3 (2 hours)
The skills at this level would be more for the educational technology specialist.