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Similar training opportunities are now offering some Internet sites. Sometimes these are the normal computing tasks that must be solved now on the Internet ( basic arithmetic, mental arithmetic ). In other cases, the approach is more playful ( Puzzle ). Often Exercises be available for download. You can even instruct your students time to look for new training materials for teaching mathematics, which are then printed and the teaching available. Or the same class even developed worksheets and then publish them on the school website. Thus, the calculation in addition to a creative project in the computer course.