Teaching mathematics is not too difficult, yet making an addon is.
Been playing PUBG and Survarium for weeks, and I'll be back on modDB to create TRoR_11a (since CWP seems to be coming) but all the games are hot right now - PUBG, there'll be more maps. Survarium, PvE is finally coming soon. CoC, 1.5 beta is out.
I'm busy on both working and gaming, but I'll be back with a nightmare of TRoR once again...