Comments:GeoGebra Newsletter 2012-03

Development News

GeoGebra 4

• GeoGebra 4.0.25.0 with bugfixes and a new keyboard shortcut Ctrl-Shift-B to export to GeoGebraWeb (see below) has been released

GeoGebraWeb

• GeoGebraWeb is the HTML5 version of GeoGebra for iPads / Chromebooks / Android Tablets

We have released a new version:

• Input Boxes now working
• FormulaText now works for conditional functions eg FormulaText[If[x = 3, x + 1, If[x < 5, x + 2, x + 3]]]
• Almost all commands now working
• Lots of other small improvements
• All relevant JavaScript methods are working: Java Script
• Most applet parameters now supported: Applet Parameters
• New applet parameter to adjust for touch screens: data-param-capturingThreshold
• Just one Graphics View supported at the moment (no Spreadsheet, Algebra View)

Notes:

• Dashed lines depend on the browser supporting that. Currently only Firefox does.
• If you upload worksheets to GeoGebra then they will automatically use Java or HTML5 as appropriate

Please report successes and problems here

GeoGebra

• A new version of GeoGebra has been deployed. This now uses a super-fast method of deploying Java Applets so the worksheets will load faster than if you host them on your own servers (and they will automatically work on iPads etc too, see above)

GeoGebra 4.2

• A new version of GeoGebra 4.2 Beta has been released with enhanced Python Scripting, and we are working hard to make that even better! More details

Tutorials & Materials

• Identifying Angle Relationships
• Practising multiplication
• Using sliders to see how the slope and the y-intercept affect a line
• Congruent Chords and their Central Angles
• Equal Area Question
• The derivative of a function
• Chords in a Circle
• Exponential Functions
• Sine Graphs: y = k + A sin(Bx + C)
• Illustrating Quadratic Inequalities
• The lines of the triangle
• Estimating pi by rolling a circle
• Area Between Curves
• Orthocenter, Incenter, Centroid, Circumcenter
• Hit of Billiard balls
• Logarithmic Spiral Regression Tool
• Simple model of carrying capacity and population growth
• Proving of Sine and Cosine Rule
• Circumscribed Circle
• The Doppler Effect with Sound
• Derivatives of hyperbolic sine and cosine
• Solving Quadratic Equations Using Geometry
• Fourier Series Accuracy / Précision

GeoGebra Community News

• Sign up for the Midwest GeoGebra Journal. They are currently recruiting volunteers to review manuscripts for the journal for publication in Spring 2012 and looking for funding so that the GeoGebra Midwest Conference can be free for participants
• The FMSP is running an online Geogebra for A level Maths course, More info

GeoGebra in the Media

• GeoGebra on Skolelinux 6.0 in digi.no
• Intégration des Tice dans les pratiques pédagogiques de plusieurs disciplines on ludovia.com
• Why the world loves GeoGebra? in iot.hu
• Resea, rch, innovation is part of the College Cevallos: Geogebra aplicado a la Matemática elemental del Bachillerato in El Heraldo

New GeoGebra Institutes

• GeoGebra Institute of KSTM, Korea
• GeoGebra Institute of Maringa Parana, Brazil
• GeoGebra Institute of Kazan, Tatarstan, Russia
• GeoGebra Institute of Astana, Kazakhstan
• Tucumán GeoGebra Institute, Argentina
• Institute GeoGebra Fortaleza, Brazil

Future Events

See our Events Map & Calendar and the Conference Wiki 2012 for a complete list of upcoming workshops and conferences as well as for proceedings of past conferences.

Apr

• 2-3 Apr: GI@nmmu Regional GeoGebra conference in Port Elisabeth and Saint George, South America
• 14 Apr: GeoGebra in the classrom in Granada, Spain

May

Other Conferences

We are maintaining a list of other conferences in which it would be helpful if you could represent GeoGebra.

Contact

If you have news for our next newsletter, please let us know at events@geogebra.org.

• GeoGebra Newsletters for previous newsletters
• GeoGebra User Forum for any questions