The first time I needed a tutor, I was in the 9th grade. I was taking algebra and any time I came up against a question, I felt lost. My tutor walked through problems with me, explained concepts to me, and supported me. Five years later, that 9th-grader would not have believed that he would declare math to be his major in undergrad. By then, I had the confidence to take on not only algebra at the college level but also calculus, multivariable calculus, linear algebra and partial differential...