Teachers can use these questions to draw students out and get worthwhile formative assessment responses to guide instruction.

Oh, no, math wants us to solve it's problems again... The equation is even stumping mathematicians, with some people adamant about the answer being 1 while others swear it's 16. And this equals 4. Now ...

Opinions expressed by Entrepreneur contributors are their own. Stumped and stymied — we’ve all been there. As busy working professionals in an ever-changing world, most of us periodically face complex ...