"Hi, I'm Henry. I took my diagnostic 168 to a 180 by building a classification of the ways I would miss points, then learning to recognize and prevent them.

I think it's most effective to sort the practice questions you miss into a list of error types that is intuitive to you. Then, you can learn to quickly run down that list to double-check those questions you're only 80% sure on. Every question has four wrong answers, so if you can identify just why they're wrong, you can be certain about the right one. I help you develop your own personalized classification that makes sense to you, then we work on practice questions that give you the opportunity to dodge your most common mistakes.

I was previously an instructor at a selective summer math program for high schoolers, and I have a BA in mathematics from the University of Chicago. My familiarity with teaching advanced math concepts helps me break down logical reasoning questions into simple terms." less...