I am a high school math teacher in the District of Columbia. I have been teaching for 12 years, of which the last spent at The School Without Walls. I am currently teaching BC Calculus and Precalculus and have been flipping my class since 2013. I have a YouTube site: www.youtube.com/c/nicholasjmv1981 where I host all my videos. I have taught nearly every course offering at my school with exception to Statistics.