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part of 32 ways to use Google Apps in the classroom starts at 12m8s more info:  http://www.gapminder.org/upload-data/motion-chart/

GNU TeXmacs is a free wysiwyw (what you see is what you want) editing platform with special features for scientists. The software aims to provide a unified and user friendly framework for editing structured documents with different types of content (text, graphics, mathematics, interactive content, etc.). The rendering engine uses high-quality typesetting algorithms so as to produce professionally looking documents, which can either be printed out or presented from a laptop. The software includes a text editor with support for mathematical formulas, a small technical picture editor and a tool for making presentations from a laptop. Moreover, TeXmacs can be used as an interface for many external systems for computer algebra, numerical analysis, statistics, etc. New presentation styles can be written by the user and new features can be added to the editor using the Scheme extension language. A native spreadsheet and tools for collaborative authoring are planned for later.

Tableau Software today announced that it will make its flagship visual analytics product free to students currently enrolled at an accredited K-12 institution, college or university worldwide. Tableau for Students is a new program that provides licenses of Tableau Desktop Professional to students to enhance their studies and gain new skills. Tableau Academic Programs also include the Tableau for Teaching initiative, which offers educators software for their classrooms. Students should visit http://www.tableausoftware.com/academic/students to obtain a free product code and will be asked for information to verify their student status at an accredited institution.