I received this recently:

Dr. McLeod, I am a math teacher in [school district] and have attended two of your presentations (one last school year). I am wondering if there is a place where I could create wikis for my classes that allow students to enter math equations, use correct geometric notation, etc. (similar to MathType). It doesn’t seem like this is an option?? Any help you can give me would be greatly appreciated.

Got any suggestions for him?