Played a bit with the online simulator and immediately ordered one for my son (high school). Great UI, I could immediately print a function, realize that it was

Played a bit with the online simulator and immediately ordered one for my son (high school). Great UI, I could immediately print a function, realize that it was showing sin() in degrees and immediately found how to change it in radians and to cap the graph to x between -5 and 5. Trivial things but usually I don't find my way easily in a calculator that I do not know because most UIs suck.