GeoGebra 4.0 now available

The long awaited  GeoGebra 4.0 is now available online. The Webstart files and Applet Start can be are fully functional.  Hopefully the offline installers will be available soon.

Some of the new features according to the website (haven’t explored all of them yet) are the following:

  • GeoGebraTube: easily share worksheets online (see “File” menu)
  • User interface: drag & drop, style bar, perspectives, accessibility
  • New tools: data analysis, chart dialog, probability calculator, function inspector
  • Copy & Paste, two Graphics views
  • Inequalities and implicit equations
  • Improved text tool, better equation displaying
  • Filling options with hatching and images
  • Animation of points on lines, dynamic limits for sliders & axes
  • Buttons, input boxes, scripting
  • Export to animated GIF
  • 50 languages

To know more about the other features, go to the GeoGebra 4.0 Release Notes and the updated GeoGebra Manual. The GeoGebra Prim, the version for younger students is also now available.

I will be revising my GeoGebra tutorials soon to make them compatible with the new version.

Mathematics and Multimedia Blog Carnival 16

The 16th edition of the Mathematics and Multimedia Blog Carnival is now live at Square Circle Z.  The Math Teachers at Play 43 has also been recently posted at Maths Insider.

http://colorvisiontesting.com/ishihara.htm

The next edition of the carnival will be hosted by Mathematics for Teaching.  To submit your articles, click here. You may also view the recent carnivals:

Jeepneys and Step Functions

In the Philippines, jeepneys are the kings of the road. They are our major way of public transport and, of course, the cheapest.  As of this writing, the jeepney fare in the Philippines is about Php8.00 (about US$0.19) for the first four kilometers and an additional 1.25 pesos (about US$ 0.03)  for each succeeding kilometer.

The table below shows the jeepney fare matrix for the first 10 kilometers. In the matrix, d is the distance traveled in kilometers and F be the corresponding fare. » Read more

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