A student uses his phone to copy the whiteboard at the end of a summer math boot camp session on Thursday, Aug. 1, 2023 at George Mason University in Fairfax. Va. Diego Fonseca looked at the computer ...

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.

Diego Fonseca looked at the computer and took a breath. It was his final attempt at the math placement test for his first year of college. His first three tries put him in pre-calculus, a blow for a ...