So I've always associated Microsoft Excel with math spreadsheets and ledgers. Recently however, the use of formulas in Excel was explained to me, and it cleared up a lot of questions. I have since learned how to make an interactive worksheet using this application. It is actually a great resource for teachers who need a straight-forward process for testing the knowledge of their students. Here is an example of the type of worksheet you can create. Students can just plug their information right into the table and get feedback, without the teacher hand-grading every assignment, saving everyone lots of time! Enjoy!

https://spreadsheets.google.com/ccc?key=0AmJuLD_qh0tmdDRPMzVwWF9hU0FEQ3FScXQ5MGNBcmc&hl=en