Calcul will help your elementary school students practice mental arithmetic or to do fractions. Choose addition, subtraction, multiplication, division or fractions; then set the range of numbers and the number of calculations for an exercise. The program shows you two numbers or fractions respectively, and you enter an answer. Right or wrong answers get audio feedback and there's a pie chart to show your percentage of correct responses. For a greater challenge, play against a friend or set a time limit for a correct answer. The interface and sounds are available in English or German. More languages are supported.
Evidence Wiper
This nifty tool allows to clean all traces of your internet activty: Internet Explorer history, typed URLs, cookies, favorites and cached data
launched applications, viewed files, find files recent lists and much more ! More info...