Lifehacker just posted a quick entry regarding Magic Number Machine. I’ve been using this tool since I got my Mac – it’s simply amazing. Magic Number Machine is an extremely powerful graphic calculator. It does everything but sit up and beg. The tool has come in very handy when I’m double-checking the kid’s homework — it’s been a long time since Algebra for me. This takes all the grunt work out of the problems.
It’s Mac only and can be found here.