What I would find interesting is the idea of a steem math help service. There are so many people, also young ones, that have problems in school or job and don't understand a certain topic. Having an adress to get an individual explanation could help some to get into math and perhaps even start to like math.
I agree - I have created such posts before and maybe I should just repeat every week, but they were not getting the kinds of questions you expect. The chainBB forum is the perfect place for people to ask questions - it can function a bit like Stackexchange or Reddit. But at the moment, chainBB use is running at about 1% compared to Steemit and eSteem.
Fundamentally, we don't yet have enough students! So prepare the environment, increase the number of participating mathematicians so that when student numbers increase there will be many people able to answer.
Mathematics forum: https://beta.chainbb.com/forum/math