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author: zachary

zachary
zachary is a former mechanical engineer and current high school physics, math, and computer science teacher. he graduated from mcgill university in 2011 and spent time in the automotive industry in detroit before moving into education. he has been teaching and tutoring for the past five years, but you can also find him adventuring, reading, rock climbing, and traveling whenever the opportunity arises.

  • how to improve your sat score by 300 points (or more!)

    wondering how to improve your sat score by 300 points? what about 500 points? this comprehensive post breaks down the steps you should take (and some good resources you can use) to get the sat score of your dreams next time you take the test!

  • ap calculus review: estimating derivatives from graphs

    so you may have memorized all of the derivative rules. you might be able to derive f '(x) from f(x) no matter how complicated the function is. but how are you at estimating derivatives directly from the graph? as we’ll see in this review article, it’s all about slope! the derivative measures slope let’s begin with…

  • ap calculus review: average rate of change

    calculus is the study of motion and rates of change. in fact, isaac newton develop calculus (yes, like all of it) just to help him work out the precise effects of gravity on the motion of the planets! in this short review article, we’ll talk about the concept of average rate of change. we’ll also…