Meet The Team

Brooklyn Math Tutors was founded with a simple guiding philosophy: Make math fun, the process of learning enjoyable, and the rest follows.

To that end, Brooklyn Math Tutors seeks out teachers who are not only strong in math, but are also warm, well-rounded, dynamic human beings, able to inspire and connect with their students on an individual level.

Alexander Friedman – Founder

Alex has enjoyed tutoring math, science, and other technical topics since he was a teenager at Stuyvesant High School.

He graduated Summa Cum Laude from Northeastern University, worked as a Researcher at Carnegie Mellon, and did a brief stint as a technology consultant before leaving the corporate and academic worlds to tutor full time.

Having worked with kids, adults, and everyone in between, he came to see that math-phobia, uncertainty, and boredom – not a lack of innate talent – keeps most students from succeeding.

Our Expert Tutors

Kathleen Mulready

Kathleen Mulready has been tutoring all levels of elementary and high school mathematics for over 15 years. She has tutored in New York City public schools as well as privately. Her students range from those preparing for AP testing to those with special needs. She has a great deal of experience with the New York State exams as well as with more specialized tests such as the SHSAT, SAT and ACT. She has also developed and edited content for various school districts following the rollout of the Common Core standards.

Kathleen is a graduate of Tufts University where she studied music and math and also holds a Masters degree in Vocal Performance from the San Francisco Conservatory of Music. In addition to tutoring, Kathleen sings with various NYC ensembles as a chorister and soloist.

She lives with her husband and two children in Brooklyn.

Roy Cohen

Roy was born in Israel, worked as a cryptographer in the Israeli Navy and got a BA in Neuroscience from Harvard (magna cum laude) and MSc in Information Systems from Cornell. He has been tutoring for over a decade, with clientele ranging from elementary school students to PhD students and adult learners. Roy tutors SAT, ACT, Calculus, Algebra, Computer Science and programming, Psychology, essay writing, English as well as Spanish and Hebrew.

Roy is a documentary filmmaker whose films about science and technology have been shown in festivals around the world (“Machine of Human Dreams” is playing in American universities and museums 2019). He has published essays and articles in The Montreal Review, El Mercurio (Chile), Yedioth Aharonoth (Israel) and his college newspaper, the Harvard Crimson.

As a tutor, Roy adapts to the student’s capabilities and needs. He is attentive and sensitive, and adapts to different students’ learning style. He has helped students get into their universities of choice in the United States, the United Kingdom, Israel, and France. He enjoys hearing from his previous students about their accomplishments and working with new students towards their own goals and dreams.

Laura Townsend

Laura has taught Mathematics, Standardized Testing, French Lit, History, Philosophy and Science to middle and high school students for more than six years across the city.

She is specialized in standardized testing prep in Math (SAT & ACT, ISEE, SHSAT), and Math homework help as well as full academic support for students following the French/American bilingual programs. She formerly ran the after-school homework help program of the French-American of New York, FASNY. Laura holds a Masters in Science from HEC Paris – France’s #1 Business School – and a Masters in Fine Arts from Columbia University. She has received higher education in Mathematics, Economy, History, Literature & Philosophy in “Classes préparatoires” at Lycee Louis Le Grand, Paris.

Today, Laura thrives on teaching those subjects, helping students grow confident with their own abilities and reach their academic goals. When she’s not tutoring, Laura works in the city as an actor, singer, and educator.

Daniel Lichtman

Daniel has 7+ years experience tutoring math, chemistry and physics at all levels, as well as extensive experience in SAT and ACT prep. He develops highly productive and personal relationships with each of his students and their parents, and develops a curriculum specific to each of their academic needs and goals, whether oriented towards college admissions, improved performance in school or exam taking strategies.

Daniel studied physics at Cornell (where he graduated Summa Cum Laude, 4.0 GPA), worked in various engineering fields before becoming a tutor, and has have a deep understanding of math and science. He knows the AP and IB math, chemistry and physics curricula intimately, as well as their qualifying examinations. He has also developed extremely effective strategies for college entrance tests, honed over many years experience with students. Most importantly, however, he has a broad experience relating to a wide variety of students and developing a relationship of trust and confidence with each student and his or her family.

Elizabeth (Liz) Campbell

Liz has been tutoring and teaching math in New York City since 2005, working with students as young as four, as experienced as thirty-somethings, and at every age in between. She enjoys getting to know her students and building a rapport with them. Recognizing that everyone learns differently, she works to find the teaching methods that are best for each student. Having tutored students at private, charter, and public schools, she is familiar with a host of math curricula.

She has also taught high school math and has prepared students for a variety of standardized tests, including the ISEE, SHSAT, Regents, Common Core, and SAT. Because of her experience across age and grade levels, she knows how concepts learned in earlier grades connect to what students will need to know in later ones.

Her B.A is in Mathematics, from The College of the Holy Cross. She truly enjoys getting to know her students, connecting with them, and helping them realize that they can do math! In her spare time, she enjoys playing hockey and traveling, when she can.

Torrey Townsend

Torrey Townsend is an academic tutor who has been instructing students of all ages for over 4 years. He has a Master’s from Columbia University and a Bachelor’s from N.Y.U.

He offers Standardized Test prep for ISEE, SHSAT, SAT, SAT II, ACT, as well as AP Exam Prep. His students tend to see a consistent increase of scores by 150 – 250 points on the SAT, and 2 – 6 points on the ACT.

He also provides ongoing academic mentorship with a focus on enrichment in Reading Comprehension and Writing Skills. His expertise is in Essay Writing and Editing. In addition, he works with students on College Essays, Interview Skills, and US University Admissions Strategy. Subject-specific classroom support includes: English, History, Philosophy, Humanities and the Arts.

When not tutoring, he is a critically acclaimed playwright.

Erica Silverstein

Erica is a very friendly, recently certified special educator in NYC. Before earning a B.A. in Psychology and an M.A. in Special Education from Brown and Columbia, respectively, Eri attended high school at Friends Seminary.

She has always been a bit of a geek, scoring an 800 on both the Math section of the SAT and the Math SAT II, and she loves every opportunity she gets to pass on to her students her passion for math. Through New York Cares and student teaching placements, she has helped dozens of elementary school students learn fundamental reading and math skills. However, she is happy to work with students of all ages and abilities.

Outside of tutoring, she indulges in many geeky hobbies, including building puzzle boxes, drawing cartoons, and crafting spectacular cat toys.

Madelin Brinson

Madelin attended the University of Florida, where she graduated with a B.A. in Biology and a minor in Spanish.

She is currently a fourth-year medical student at St. George’s University, doing clinical rotations in Brooklyn. She will graduate in the top quartile of her class and is in the process of matching into a Pediatric residency.

Madelin has experience in tutoring college science classes, high school English and Spanish, and elementary education.

When not in the hospital, Madelin enjoys cooking, improv and stand up comedy, and enjoying the city life and culture of Brooklyn.

Andrew Siris

Andrew Siris is an experienced tutor, teacher, mentor and medical science researcher. Andrew currently teaches Biology, Chemistry and Forensic Science, and most recently prior to that, taught Math at CUNY-Kingsborough Community College. He holds a BA magna cum laude and Phi Beta Kappa from Rutgers University in New Brunswick, NJ. He was a premedical student and psychology major.

Andrew has taught AP Calculus AB, AP Biology, NYS Regents biology, chemistry, microbiology and many levels of math to high school and college students. In math, he has taught NYS Regents geometry, as well as pre-algebra, algebra, geometry, algebra 2 and pre-calculus in NJ. His several years of stem cell research at the Rutgers and Columbia Medical Schools allows him to bring his lessons to life with fascinating, real-world applications of the material to medicine, engineering and everyday occurrences. In addition, Andrew has been a teacher for SAT prep courses at private schools and inner-city charity organizations while also having served a one-on-one private SAT tutor.

He loves to sail small sailboats on lakes in the summer, is interested in the history and philosophy of science and medicine and spends his spare time with his wife in Brooklyn and on the weekends with her by the Long Island Sound and Jersey Shore in the summer.

Diana Liu

Diana has worked extensively with a wide variety of young people as a tutor, mentor, and teacher. Her areas of tutoring expertise lies predominantly with math and English. She currently is an English teacher at a specialized public high school in Brooklyn, New York. She holds a BA from UC Berkeley in Psychology and Japanese Literature and a MA from Teachers College, Columbia University in English Education. She is highly creative and energetic when helping students develop confidence in their areas of need and enjoys developing strong relationships with students to prepare them to be university bound.

Diana enjoys being part of NYRR (New York Road Runners) and kickboxing. She is always in search of new cafes, in which she can fully experience what she calls the “New York vibes”.

Murat Keyder

Murat graduated in 2008 from Cornell with a degree in math, and holds a masters degree in music from the University of Pennsylvania.

He scored 1570 on the SAT, with 800 on math and 770 on verbal, and he has been teaching and tutoring math and SAT since high school. He teaches a broad range of age groups and math topics, ranging from test prep to high school and elementary school math. He really enjoys taking concepts that appear unmanageable to students and breaking them down to their bare essentials, and then building the material back up from there, and frequently finds that students are held back and intimidated by their fear of math rather than the material itself. He has had many students who not only ended up improving their academic performance, but also actually started to enjoy the material.

In addition to teaching math, he is a professional musician, teaching guitar at the University of Pennsylvania, writing music, and performing various styles of music in the New York area.

Lily Akerman

Lily is a native New Yorker who currently lives in Brooklyn. She attended Stuyvesant High School and Princeton, and has an MFA in playwriting from Hunter. She scored 800 on the Math 2 SAT 2 and is a Fulbright Scholar.

She has tutored math to math-phobic middle schoolers, adults prepping for the GRE, and everyone in between. Her goal is not only to help students learn the material but to help them become more confident problem-solvers. She wants them to have a deep understanding of the material — to know why a formula works rather than simply memorizing it.

As well as math, she has also tutored students in biology and English.

Lida Shao

Lida studied Education and Community Health at Brown University, where she graduated magna cum laude.

After a decade in youth development and food democracy she is currently a professional studier — a second year medical student. She has mentored and worked academically with school-aged children and teens. She enjoys decision-making algorithms, value matrices, and vision graphing towards personal and social transformation .

When not working with community members, she is working the land–growing vegetables, raising chickens, keeping bees, composting, and building a mini-farm in the city.

She is proud to be a martial artist, a foodie with interest in raw foods, a winter bicyclist, and a multi-lingual New Yorker.

Jillian Keegan

Jillian studied at California Polytechnic University, San Luis Obispo, where she graduated Magna Cum Laude with a B.S. in biomedical engineering. She received a score of 2330/2400 on her SATs (800 math, 800 reading, 730 writing) in high school, and was accepted to Mount Sinai’s prestigious Flexmed program in college, granting her early acceptance to the Icahn School of Medicine.

In addition to her experiences tutoring students through her campus chapter of the Society of Women Engineers, she grew up regularly tutoring her two younger sisters, one of whom now attends Brown University. She loves getting students excited about math and science and is skilled at guiding the thinking of her students while still allowing them to problem-solve on their own. She is a strong believer in instilling her students with confidence in their innate abilities.

In addition to tutoring, Jillian works at a Brooklyn rock climbing gym, where she helps people of all ages learn to belay and boulder safely. She enjoys climbing, listening to music, and exploring the city in her free time.

Sydney Viles

Sydney has been teaching since 2011–in preschools and special education settings, ESL classrooms, as a full-time nanny, and also as a circus instructor! She has a Masters Degree in Early Childhood General and Special Education from Bank Street College and is currently a public school teacher in Brooklyn.

Sydney was blown away by a course called “Math for Teachers” at Bank Street where she learned about how common it is for American students to receive shallow, hurried math instruction and how this begets limited understanding and a lack of confidence. She is dedicated to breaking this cycle and helping students discover their own potential to persevere and think flexibly. She believes strongly that learning is founded upon meaningful relationships and fosters a warm and encouraging rapport with her students.

Aside from working with young people, Sydney is passionate about making music, traveling, foraging wild mushrooms, and snorkeling.

Nolan Reece

Nolan graduated from Bard College with a bachelor’s degree in Physics. He wrote his undergraduate thesis on atmospheric convection.

He has tutored at elementary, high school and college levels in a range of subjects, including: high school Physics, SAT Math, Calculus (I,II,III), Differential Equations and Quantum Mechanics. He currently volunteers as a math tutor at YouthBuild, a non-profit in Long Island dedicated to preparing adult students to pass the TASC exam.

Nolan believes that one-on-one tutoring is the best way to learn something that is challenging, because it encourages the student to ask questions and discuss their ideas.

In his free time, Nolan enjoys basketball, creative writing and making short films.

Mila Liakhovitser

Originally from Bronx, NY, Mila is a graduate of Bronx Science where she took every single math course available starting with honors precalculus her freshman year. She discovered her passion for tutoring as friends started asking her for help with their math classes. She’s tutored all levels of high school math including Algebra I, Algebra II, Geometry, Trigonometry, and PreCalculus.

After scoring a 2380 on her SATs (800 math, 790 reading, 790 writing) and conquering the SAT IIs (math I 800, math II 760, literature 730), Mila made the SATs her specialty, teaching the test as well as uncovering and fixing knowledge gaps along the way to best prepare students for college.

A tutor of 10+ years, she prides herself on her ability to connect with students and understand their needs. Everyone learns and approaches problems differently which is why she takes the time to understand her how her students think so as to explain concepts to them in a way that clicks for them; the great thing about math is that there’s always more than one way to solve a problem! She also understands that self-confidence is half the battle and shows her students how much they already know rather than just pointing out their problem areas.

Mila graduated in 2015 from Duke University with degrees in both mathematics and philosophy and a minor in economics and has since worked as a business analyst and financial data analyst for multiple banks on the East Coast. She hopes to get her Masters in Data Science and continue her analytical journey, all the while tutoring the subject she loves best (math, duh!).

Outside of work, Mila is an avid music lover and has attended over 500 shows! She also never gives up and proves this by being a lifelong fan of the NY Jets.

Jack Schneck

Jack currently is in his last year of medical school at St. George’s University School of Medicine and he also holds a Bachelor of Science degree from the University of Wisconsin – Madison as well as an MBA from St. George’s.

He’s an expert test taker and test strategist, with experience in numerous forms of standardized testing throughout his own academic career. His diverse background of studies and excellent score record provides a unique understanding of the testing world. He has experience in education and tutoring in different age groups from children to adults in a variety of topics from sailing to science.

He enjoys traveling and going to music and comedy shows in his free time. He lives in Brooklyn with his fiancee.

Olga Zemskova

Olga has taught Mathematics for over 25 years. She is originally from Ukraine and has a Master’s Degree in Physics (from Odessa I.I.Mechnikov National University).

She has a background in mathematics with over 20 years of in-class and online teaching experience at various colleges and universities.

Teaching is Olga’s passion. Her strength is being able to explain difficult concepts in an easily understandable way. Olga loves creating an environment where the student is encouraged to interact and overcome math anxiety. She helps her students by adapting to their learning methods and breaks concepts into small easy parts.

In her free time, Olga enjoys reading, traveling, hiking, listening to jazz and classical music, going to opera and theater. She loves meeting new people. She also likes surprises, adventures, and all unexpected things which make life full and interesting.

Benjamin Fischer

Ben hails from the foggy city of San Francisco, CA, where it is rarely colder than 50 ˚F year-round. All the while maintaining a sunny disposition, he spent four winters at Yale University in New Haven, CT, graduating with a B.S. Electrical Engineering degree in May 2017. A lifelong learner himself, Ben is an enthusiastic teacher who emphasizes the importance of developing a growth mindset. He believes that anyone can learn anything they put their mind to, and a good teacher will give students the means and confidence to do so. Ben enjoys dispelling the notion that math as a subject is inherently difficult.

Ben is currently pursuing his passion for music and audio engineering in Brooklyn, NY. He enjoys “obsolete” technologies–vacuum tube amplifiers, magnetic recording tape, VHS–and turning off his phone.

Daniel Chu

Daniel Chu is a graduate of Stuyvesant High School and Williams College. He has a Master of Science in Mathematics Education from St. John’s University and a Master of Fine Arts in poetry from the University of Houston.

Daniel has taught for over seven years at every educational level and is skilled at moving between the disciplines of Math and English. With his extensive experience teaching in NYC middle and high schools, he can adapt the English and Math curriculum to fit the goals of his students. From his time as a college instructor, he understands what students need to be successful academically at the university level.

Daniel also enjoys working with students on creative writing. He has led writing workshops in fiction, nonfiction, and poetry for a range of students, from third-graders to adults in continuing education classes.

In his spare time, Daniel enjoys rock climbing, eating new foods, and of course, reading and writing.

Olivier Glowacz

Olivier is a Brooklyn native who attended Hunter College High School. He went on to graduate magna cum laude from the NYU Tandon School of Engineering with a degree in Physics and Mathematics.

Olivier has always been fascinated by learning new ideas and has a great passion for sharing those ideas with others. He believes that the key to effective tutoring is to introduce students to unfamiliar concepts in a gradual but captivating manner which builds upon more basic concepts that the students are already familiar with.

Besides tutoring Olivier loves to create fun and educational online videos, climb mountains, and travel to remote places around the world.

Annie Bishai

Annie graduated from Harvard University with a bachelor’s degree in History and Literature and has more than four years of tutoring experience. She has worked with elementary, middle, and high school students in math, English/language arts, and French, as well as SAT prep. She believes in building warm and positive relationships with students and is committed to helping them build confidence in even their most challenging subjects.

Originally from Baltimore, MD, Annie lived in Massachusetts and South Africa before coming to New York. She earned a 2340 on the SAT (750 in Math, 800 in Critical Reading, and 790 in Writing) and 5’s on eight different AP tests.

In addition to tutoring, she currently works as an editorial assistant at Penguin Random House — ask her anything you like about the world of book-publishing! In her spare time, she sings in a choir (and also in the shower) and enjoys drawing, reading, and bicycling.

Marc Langer

Marc grew up just north in New Rochelle, NY and attended Brown University where he received his Bachelors in Physics and Masters in Teaching. Marc loves to help students see the connections within and between subjects, so they can understand deeply how the pieces fit together and digest new ideas quickly and effortlessly.

When he’s not geeking about Math and Science, Marc plays trumpet for the NYC-based Soul-Pop band “Lawrence”, does yoga, and plays Ultimate Frisbee. You may also catch him watching “Bojack Horseman” on repeat.

Shar Jaidev

Shar Jaidev is a math nerd, through and through. She graduated from Northwestern University with a BA in Mathematical Methods in Social Sciences (honors) & Economics. She spent four years on Wall Street, followed by an MBA at the Kellogg School of Management. She currently works for a large global nonprofit where she manages a grant portfolio specifying in Nutrition and Maternal and Child Health.

Shar has over five years of experience tutoring math for students of all ages. She loves helping students see the real-world connections to seemingly complex math concepts. Tutoring sessions are fun but focused.

In her free time, Shar plays in a bowling league and is a classically-trained Italian opera singer who mostly belts Lady Gaga and Adele at karaoke.

Alex Arakelian

Alex is a Brooklyn lifer with a Bachelor’s in Mathematics from NYU who is currently working on a PhD in Data Science. He has been tutoring since high school, and during his college career was tutoring students in all levels of undergraduate math. He is currently an instructor at NYU, and has taught Precalculus, Calculus, as well as Probability and Statistics courses. He also has written exams for nearly every undergraduate course while working at NYU’s engineering school, Tandon.

With his experience at Tandon, and research in the field of Machine Learning applied to sports, Alex is no stranger to how to use math in applied fields. He has also tutored students in all manner of high school level topics as well as the SAT, ACT, and GRE exams.

Alex believes that solidifying the fundamentals of a topic is the best way to improve. He aims to guide students to use this knowledge to increase confidence and help manage math anxiety. He also believes that every student learns differently, so having a variety of teaching styles to adapt to the needs of the student is important.

Samara Skwiersky

Samara was born and raised on Long Island, NY. She received her Bachelor of Science in Public Health as well as her Masters of Public Health from Tulane University in New Orleans, LA.

She has been living in Brooklyn for the past two years, while completing her 3rd and 4th years of medical school. She attends St. George’s University School of Medicine, and is currently applying for a residency in Internal Medicine.

Samara has experience tutoring elementary school math as well as medical school level biochemistry. When not in the hospital, she enjoys traveling, baking, and playing tennis.

Carolyn Hietter

Carolyn Hietter is a tutor and musician with a passion for systems. She enjoys working with young people and motivating them to both understand and maximize their potential through practice. An aptitude for math can open gateways to a variety of different subjects, and Carolyn enjoys showing young students the many exciting portals math can lead them down if they can learn to love it early on. She is a strong proponent of the one-on-one tutoring method, as it allows the students to discover their own strengths and weaknesses in a concentrated environment where they are free to make mistakes, learn from them, ask questions, and master new material.

Carolyn has tutored students at the elementary and middle school levels to help strengthen and reinforce their grasp of math fundamentals. She has also taught music to both adults and children at a variety of different skill levels.

She graduated from Bard College in 2015 as a double major in music and anthropology, and has an interest in a variety of subjects ranging from acoustics to economics to film.

Hayden Kline

Hayden Kline is a current Master’s student at NYU, studying Film Scoring and Composition, and living in Brooklyn. He graduated from Yale University in 2018, majoring in Political Science and Music.

Hayden has tutored extensively in his hometown of Montclair, New Jersey. He has volunteered for elementary and middle school students and has freelanced for high school students taking important tests. He has had significant experience with that standardized testing world, scoring a 2310 on that SATs (back when it was out of 2400): 800 Math, 760 Writing, and 750 Critical Reading. He’s excited to help others figure out these tests — or understand some of the more basic fundamentals.

When he’s not tutoring, he enjoys composing music, rowing, playing games, and exploring the city. He’s excited to be here!

Tom Fogle

Tom is a senior at New York University’s Courant Institute completing his dual degree in Mathematics and Computer Science. He has 4 years of professional tutoring experience with a focus on Math.

Tom has taught a wide variety of subjects including SHSATs, SATs, APs, writing, physics, computer science, and mathematical subjects ranging from basic addition to trigonometry to calculus. He strives to see his students succeed not just by making the material clearer, but also by demonstrating the relevance of everything he teaches – something he believes can induce excitement and eagerness to learn in addition to improving performance.

When he is not teaching, Tom enjoys going on daily runs, hiking, learning new piano pieces, and indulging himself in strategy games any chance he can get – from high-paced virtual games to his long-time hobby of chess, in which he has placed 10th and 15th nationally for K-12.

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