The weaker the math, the more elaborate the graphics need to be. Unknown There are a lot of interesting programs to create diagrams or graphs. I tried out the trail version of OmniGraffle and it was a joy to work with. But also, quite expensive. A posting in the German Tool Blog and a comment there led me to yEd. Despite its rather unfortunate name, it looks impressive. And it works on Windows and Mac and it’s free. Just have a look at their 90 second introduction: I’m definitely going to try it out a bit further. And while I am not a fan of Java programs, it does look like a really useful tool.
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