I make short, to-the-point online math tutorials. I struggled with math growing up and have been able to use those experiences to help students improve in math through practical applications and tips.

👉 Learn how to verify trigonometric identities involving the addition and subtraction of terms. To do this it is usually useful to convert the addition or subtraction terms in terms of one ...

As a ninth-grader, Shanghai's Li Sixin spent more than three hours on homework a night and took tutorials in math, physics and chemistry on the weekends. When she was tapped to take an exam last year ...