Hello JGO, nice to write a topic here again 
(won’t involve Java though, I’m sorry ^^)
Just 10 minutes ago I finished my SAT tutorial Graph on desmos.com. It’s a great website which makes drawing graphs super easy and where it’s possible to add sliders and time-changing values for looking at how your graphs then change 
So you can look at the tutorial yourself in the browser:
https://www.desmos.com/calculator/xagrux7ssl
It took quite a while and the mathematical functions used there mostly hardly have anything to do with SAT, but it’s the interactive visualization, which I like
Read the tutorial text on the left and click on the gray circles to make stuff appear on the right.
Tell me what you think!