ABC Rotating Numbers and Dzen 006
If you have entered the right amount you will see a green light. If not, you will see a red light and you can enter a new number. Stay with the activity. If you get a red light, look again and select another number. Then let it go, and start looking for the next set of numbers. Just keep noticing.
You may find that the less you move your eyes the more effective you become.
A program to search for eclipses (lunar, solar, total, annular and umbral), to calculate the phase of the Moon at any given date and time and to convert between dates in the Gregorian and Julian calendars and dates in four lunar calendars.
The GSA Image Analyser is a program to analyse 2D Images of any kind. It can recognize and count objects in an image or also calculate the distance areas in it. The images can be imported from many sources (file, scanner, microscope, cam).
The AstroViewer planetarium software displays an interactive sky map for any time and any location on Earth. A print function and a 3D solar system map are available as well.
Astronomy software to simulate how astronomical objects move and interact under the force of gravity. It features superb interactive 3D graphics which allow you to move around within a many-body astronomical system, while watching how it evolves.
Free Java Applet is a chemistry spreadsheet calculator - balances virtually any chemical equation and follows up with stoichiometry calculations as well as equillibrium calculations in spreadsheet fashion. Includes Tutorial. Demo at mathshowcase.com