Notice that she is in math education and not in a
mathematics department.
Bingo. Math education is to math as astrology is to astronomy. I'll eat my hat if this particular professor can describe a quadratic equation, much less solve one. Too hard? Call it "racist" and you don't have to learn it. Or teach it.
Illinois has a very good math department. I think some guys from that department solved the Four Color Map problem.
Wouldn't it be fun to see the faculty of the math department go over and picket the math ed department!