• GeoGebra Graphing Calculator: Web App –  App Store – Play Store
• GeoGebra Geometry: Web App – App Store – Play Store
• Windows and Mac versions are coming soon to our downloads page

What’s New?

• New user interface: smart, fast, powerful
• Exam mode: turn your device into an exam-compliant graphing calculator
• Graphing Calculator:
  • Solve button for equations: exact and numeric
  • Special points for functions: roots, min and max
• Geometry app:
  • Toolbox with categories and more/less buttons
  • Construction steps with text descriptions

Our existing GeoGebra math app will continue to be available as “GeoGebra Classic” (including 3D, CAS, spreadsheet and probability calculator). Don’t worry,  we will support the classic versions with updates and bug fixes for many years to come. All GeoGebra apps in our growing math apps family are fully compatible as they are built on top of the same powerful GeoGebra math engine. Your GeoGebra files will work in all our apps and on all your devices.

Wondering which GeoGebra app is right for you? We don’t believe that one size fits all. So why not try out our Graphing Calculator, Geometry and GeoGebra Classic apps and use the ones that fit your needs best. This is just the beginning of a whole new world of exciting GeoGebra math apps we are rolling out over the coming months.

We’d love to hear your feedback about our new apps on Twitter @geogebra and by Email to support@geogebra.org.

Thank you and have fun playing!
Markus and the entire GeoGebra Team

• Surfaces
• Geometric objects (spheres, cones, cylinders etc)
• Quadrics (paraboloids etc)
• Nets (now draggable to open & close)

and as it is a 100% native app, it is super fast & smooth. It also works together with the 2D Graphing Calculator App if you want to work with 2D and 3D simultaneously. We’ve already made lots of improvements from the feedback we’ve received from the 30,000+ users who tried the beta version so many thanks to them!

As always, let us know what you think in the GeoGebra Forum or send us an email to support@geogebra.org and tell us what you would like added and improved over the coming months!

Get the GeoGebra 3D Grapher now from the Play Store

For the first release it has the graphics and algebra views but we will be adding lots more features over the coming months. We have prepared the foundations so everything necessary is already working under-the-hood (for example the CAS engine, and you can create – but not yet display – 3D objects).

There are also some extra-cool goodies to enjoy:

• brand-new native equation editor
• long-tap on an object to change its properties
• drag sliders and animate them in the Algebra View
• freehand drawings and shape recognition
• everything is running natively (LaTeX, CAS, graphics drawing etc) so it is super-slick to use
• search, open and save from/to GeoGebraTube
• find out more in our tutorial Graphing Calculator Tutorial

You can download it in the Play Store now for Android phones and tablets – please let us know your ideas for improvements with the “Send Feedback” option or in our Mobile Apps forum.

But wouldn’t it be nice to also hear back from your students or colleagues who you shared your materials with? We think so too! That’s why we have created GeoGebra Groups:

• Supercool and easy collaboration between students and teachers, colleagues, and really just everyone nice out there!
• Invite others using your Group Code
• Post texts, images, videos, pdfs and GeoGebra worksheets to your Group
• Add questions and interactive GeoGebra tasks for your students and give them feedback
• Discuss your ideas with everyone or individual Group members using comments
• Find out how to do all that and more in our GeoGebra Groups Tutorial

Try out our Groups, start to collaborate in a new way, and let us know what you think!

www.geogebra.org/groups

Posts

Feedback

This summer, GeoGebra was again part of Google Summer of Code (GSoC) supporting young and talented open source coders. We had a very strong field of 64 students applying and were able to choose 4 of them to work with us during this summer. There were also some impressive contributions submitted by many of the other candidates which have already been incorporated into GeoGebra.

Yi-Chun (Jacky) Kuo: Native iOS App

Jacky

Our current iPad app is based on a WebView so we were interested to see if Jacky could make a prototype of a native app using the quite-new RoboVM cross-compiler to convert GeoGebra’s Java code into Objective C. As part of his application he managed to get the JLaTeXMath formula engine working which was very impressive in its own right. For the first half of his project he got the full GeoGebra kernel compiled and running and for the second half he worked on drawing objects and user-interaction.

There is still a lot to do before we can make a release (for example implementing the toolbar and equation editor) but Jacky will stay on with GeoGebra after GSoC to help!

GeoGebra running in Xcode

Georgios Ouzounis: Handwritten Equation Recognition

Georgios

Handwritten equation recognized!

Georgios made a nice web app as part of his application to collect example handwritten equations from phones and tablets and store them in a database. This was important as it allowed him to use that data when testing and training his algorithms. The three parts to his project were:

• splitting the equation into its symbols
• recognising the symbols
• converting that back into GeoGebra syntax

and by the end of his project it was successfully recognizing indices, fractions and square-roots. At the moment the code is running server-side and is a little slow so the challenge for the future will be to get it running faster and client-side. Open Source libraries used: OpenCV

Thilina Madumal: Intersection Project

Polygon Intersections in 2D and 3D!

As part of Thilina’s application, he adapted the Clipper library to compile with Java 6 and with GWT and incorporated it into GeoGebra, which he then used as part of his main GSOC project to improve the polygon operations within GeoGebra.

He has also done a lot of work on improving the Intersect command to allow the intersection of many more object types to be calculated dynamically.

Shamshad Alam: Implicit Curves Project

cos(x y) = k

x⁴ + y⁴ + z⁴ = 2

Shamshad also made some nice experiments with the Clipper library as part of his application

The main focus of his GSoC project was to implement plotting of implicit curves and surfaces, namely:

• plotting of non-polynomial implicit curves (for example you can try sin(x) – sin(y) = 1 in GeoGebra Beta)
• plotting of implicit surfaces (eg x⁴ + y⁴ + z⁴ = 2)
• extending commands for rotation, translation and other transformations to work with these object types

Thanks to all our GSoC students for a great job done during this summer!

Here’s an example of the new version using our new super-pretty formulas:
tube.geogebra.org/student/m33487

If you have any questions or suggestions concerning these new updates, please write to us at support@geogebra.org

We’re very excited about this update as you can now enjoy the same GeoGebra power and experience on your tablet like just like on your laptop or desktop. Some highlights:

• Save and load directly to/from your GeoGebraTube profile
• All views: Graphics, Algebra, Spreadsheet, CAS and 3D
• 3D supported on most Android tablets and iPads with iOS 8+
• Full CAS View available on Android 4.4+ and iOS for exact calculations
• Context menus available using long-touch on objects and views
• Object Properties and Construction Protocol
• All 1000 GeoGebra commands supported
• 120,000+ GeoGebra searchable materials at your fingertips
• New Tablet Tutorials

• a brand-new user interface that works great both with Touch and Mouse, so you can use it on laptops, desktops and tablets
• all the great features you know from our desktop app: Graphics, Algebra, Spreadsheet, CAS and 3D
• direct saving/loading your files to GeoGebraTube using your GeoGebra, Google, Facebook, Twitter or Microsoft account, so you can access your work on all devices everyhwere

Learn more in our tutorial document: GeoGebra Quickstart for Web & Tablet App

Now, we are ready to show the first beta version of our new GeoGebra Chrome App with 3D View.

Of course we’re still developing the Java desktop version alongside and GeoGebraTube will support displaying 3D files using WebGL / HTML5 as well. Our 3D applets already work on devices with Android 4.4 (and Android 4.3 devices supporting WebGL), for example, Nexus 7 Phones and Nexus 10 Tablets. If you have an iPad you will have to wait for iOS 8 to be released later this year to use our 3D applets on GeoGebraTube.

Over the last year we’ve been working on a top-secret project to improve GeoGebraTube which is now ready for its first public showing. At the moment a typical HTML5 applet downloads over 3MB when it’s first run and starts up in about 3s (on a fast computer). With our new “GeoGebra Applet Compiler” technology, the same applet downloads only about 0.4MB and starts up in 0.8s on the same machine. In addition our compiled applets run much more smoothly even on slower devices and support retina resolutions on iPhone 4, 5, iPad 3, 4, Nexus 7, Nexus 10 etc.

Try some example applets using our new GeoGebra Applet Compiler:

• Pythagoras: http://tube.geogebra.org/student/m125392
• Patterns of a Cube: http://tube.geogebra.org/student/m115740
• Sine Function: http://tube.geogebra.org/student/m124879
• Lower and Upper Sum: http://tube.geogebra.org/student/m10637

There are a few limitations about what will work with the new applet compiler (we’ll release details later) and it will only work inside GeoGebraTube, so we will still continue to improve and support our other versions of GeoGebra as well, of course. Our goal is to make these new faster and smaller GeoGebra applets the default for most materials on GeoGebraTube automatically in the background without you having to do anything. We will keep you posted

Mike & the GeoGebra Developer Team