[u]https://wiki.geogebra.org/en/LaTeX[/u]

gMath 互動數學教室[br][url=http://www.gmath.hk/]http://www.gmath.hk[/url]

This applet by creator [url=https://www.geogebra.org/u/tllf]TLLF[/url] allows the user to click each text box to view the latex codes. I have utilized these applets as a guide to create my own in the past, and modified the code to my liking.