Unfortunately most interactive questions just tell the person they were wrong it they weren't right, or smack the right answer in they face.
I like the possibility to give "tutorial" feedback for wrong answers that can put the learner on the right path. I've used a PERL script based on http://www.civeng.carleton.ca/~nholtz/tut/doc/doc.html
for interactive questions in math and physics. You can specify different feedback for different (even overlapping) intervals and it recognizes a lot of number formats directly. 1/2 0.5 2/4 5E-1 5*10**-1 would all be considered equal. It alse has a hinting function. I would like to develop a more portable version in perhaps JavaScript.
I could translate some example if any one is interested (my pages are in Swedish).
Quiz
Wrong answer feedback
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