Faculty and Staff » Mathematics


James Willett, Math Department Leader  Mr. Willett was born in a small town in the outback of Australia where he spent his school years. Upon graduating High School he attended the University of Newcastle, balancing his love of Mathematics with his love of sports and travel. Since becoming a teacher he has taught in both England and Australia and is looking forward to furthering his career as part of the Mesa team. In his spare time you will find him searching the country for amazing outdoor activities.


Krystal Mieschberger, Math Team Coordinator and Teacher — Ms. Mieschberger is a New York native! Before moving to Brooklyn a few years back, Ms. Mieschberger grew up in Suffolk County, Long Island. During her time there she graduated from Hofstra University with a double major in both Mathematics and Mathematics Education. Since 6thgrade, Ms. Mieschberger has been inspired to be a mathematics teacher and has continued to follow that dream by teaching, coaching & furthering her own education. Ms. Mieschberger graduated with her Masters Degree from Touro College and is now a part time professor there! When she is not teaching you can catch Ms. Mieschberger eating oreos, playing with her doggy Lexi, and practicing her Minion impressions!


Jay Green, Math Teacher — Mr. Green is a Brooklyn native who grew up in the handball courts and football fields in Bushwick. After he graduated from Canarsie High School, he attended Morrisville State College where he discovered his love for teaching as a Math tutor. He later graduated from the University at Albany with a Bachelor’s Degree in Mathematics, then became a 2014 TFA Chicago corps member where he developed the curriculum for the founding Algebra II class. He recently moved back to NYC to teach students who grew up in the same community to help eliminate the fear of Math. Some of his hobbies include, running, traveling, playing sports and dancing salsa.


Momotaj Hossain, Math Teacher — Ms. Hossain is born and raised in Queens, New York. She graduated from Brooklyn Technical High School and then attended Hunter College. Ms. Hossain entered college with no ideas on what career she wanted to pursue, so freshman year she took classes in each and every department the college had. After freshman year, she interned as a teaching assistant and realized that education was her true calling. She graduated from Hunter College with her Bachelor’s and Master’s degrees simultaneously. Alongside teaching at MESA, Ms. Hossain also teaches art, writing, and math at the STEP program at Barnard College. She lives in Queens, but Ms. Hossain can be found in Bushwick more often than not. She enjoys collecting various items, traveling, reading, and singing.


Julie Kwong, Math Teacher — Ms. Kwong was born and raised in Rockville, MD. She was the first in her family to attend and graduate college, at Princeton University in NJ, where she earned a Psychology degree with honors. During college, some of her favorite activities were baking cookies at the student cafe and planning cultural events for the Chinese Students Association. After college, Ms. Kwong earned her teaching license in math and she is very excited for her second year of teaching at MESA! In her spare time, Ms. Kwong likes to play board games, try new restaurants, and bargain shop.


Arturo Lazaro, Jr., Math Teacher — Mr. Lazaro was born and raised in the Bronx, NY. He’s taught in the Bronx, Manhattan, Brooklyn, and even in China for a few years. During his spare time, he can found playing baseball, watching Dragon Ball videos on YouTube, or cooking/baking.