Spreadsheet

I think that a spreadsheet is extremely useful and by far the best way to keep a gradebook. You can also use material aids to help create lesson plans but I think as a teacher I would use it more for a grade book. A spreadsheet is far superior to a calculator. It essentially is a calculator, however it lessens the risk for error because on a calculator you have to press all of the mathmatical functions yourself, and if you mess up on a single symbol you get the wrong grade. It is much easier just to type the grades in and let the computer do the work for you.