Hi,

Just wanted to add a few examples of math teachers not knowing their subject very well. I volunteer in a 2nd grade math class each week. I have witnessed the teacher tell the class that 52-27=5 and 9+5=15. Last week she introducted fractions. Half way through the lesson she turns to me and asks, "Which one is the numerator?"

I've been told not to correct her in front of her students. It will undermine her authority!

J.