Stellarium is a free open source science planetarium for your computer. It shows a realistic sky in 3D, just like what you see with the naked eye, binoculars or a telescope.
WordTalk is a free plug-in developed for use with all versions of Microsoft Word (from Word 97 upwards), which may help people with reading and writing difficulties use Microsoft Word more effectively. It will speak the text of the document and will highlight it as it goes. It contains a talking dictionary to help decide which word spelling is most appropriate. It sits in a user's toolbar and is configurable, allowing users to adjust the highlight colors, the voice and the rate of speed of the speech.
VocabGrabber analyzes any text you're interested in, generating lists of the most useful vocabulary words and showing you how those words are used in context. Just copy text from a document and paste it into the box, and then click on the "Grab Vocabulary!" button. VocabGrabber will automatically create a list of vocabulary from your text, which you can then sort, filter, and save. Select any word on the list and you'll see a snapshot of the Visual Thesaurus map and definitions for that word, along with examples of the word in your text.
Use this free reader to create a library of e-books to provide reading supports through spoken text as well as a variety of other study features (annotations, highlighting, dictionary, bookmarks). Can convert any digital text or students' Word documents into an e-book. Cover images can also be added.
GeoGebra is a dynamic mathematics software for schools that joins geometry, algebra and calculus. GeoGebra is an interactive geometry system. You can do constructions with points, vectors, segments, lines, conic sections as well as functions and change them dynamically afterwards. Additionally, math equations and coordinates can be entered directly. GeoGebra allows students to see the relationships between these different branches of mathematics.GeoGebra is available both online and in a downloadable version.
Math Player is a free download that enables Internet Explorer and other screen readers to read mathematical equations and notations.