Aggy is a second year student at Harvard College, studying integrated biology and anthropology. Growing up, she always loved learning about math and found herself helping her classmates and siblings in their math classes. In addition to CMC, she is also an SAT tutor. Aggy particularly loves CMC's creative approach to helping young student understand complex topics and theories - including some college-level ones. When she's not helping with CMC, Aggy enjoys reading, swimming, and spending time with loved ones. She's also a really good ping pong player!

Alena earned her degree in Education in Russia and continued studying the differences between Russian and American math programs. She's been teaching math for more than 7 years, including during CMC's 2023 summer camp. Alena regularly runs lectures for schoolchildren about women in STEM, and her favorite teaching moments are when students start to find math interesting, beautiful, and fun. As a passionate traveler, she's constantly exploring new countries and cultures, always on the lookout for fascinating mathematical insights from around the world.

Alper freshly started his PhD at École Polytechnique, Paris, and recently finished his undergraduate degree in physics and math. He's studying high-energy physics: the cool name for particles. Before CMC, Alper did competitive physics and taught high school students, which sparked his passion for teaching. At CMC, he enjoys answering creative, puzzling, yet fundamental questions from kids. Besides academics, Alper likes rowing, playing guitar, and biking. He makes "awesome" jokes to Luke from CMC and teaches him a bit of Turkish every week :D

Cody is an undergraduate student at Yale University, studying math and education studies. They fell in love with math in 6th grade, when they had an amazing teacher who showed them how much fun math could be. They joined the Cambridge Math Circle to have the same effect on other students. In their free time, Cody enjoys modular origami, ice skating, musical theater, and playing trombone and tuba.

Constance is a PhD student studying biophysics at Harvard University. She has a bachelor's and master's degree in chemistry from Harvard and enjoys teaching both math and music in a variety of contexts... especially with CMC!

Crisel is a PhD candidate studying physics at Vanderbilt University and a Smithsonian Astrophysical Observatory (SAO) Predoctoral Fellow. She's currently studying the physics of solar flares. Crisel earned a Master of Science in physics from Fisk University in 2019 and a Bachelor of Science in mathematics (major) and physics (minor) from St. Edward's University in Austin, TX, in 2017. Crisel is originally from Mexico City, Mexico. When not doing research, she likes solving puzzles and spending time with her dogs and cat.

Eleni is a junior at Yale University, studying mathematics and computer science. Originally from Michigan, she loves teaching and tutoring math. She's also currently co-president of Dimensions, Yale's Women and Gender Minority Math Students club. Eleni went to Canada/USA Mathcamp '20, '21, and '22, and was a JC for Mathcamp in '23. She loves visualizing math, whether it's thinking about geometry in higher dimensions, doughnuts and coffee cups, or group structures. In her free time, Eleni loves to play the violin, fold origami, crochet, collect coins, do woodworking, bake, and play gold. In college, she's loved trying new things, such as learning to ice skate. She has two cats at home that always walk in front of her camera during Zoom calls.

Eli is a freshman at Princeton University, planning to study math. During high school, Eli studied numerous advanced mathematical topics at the University of Connecticut and at the Canada/USA Mathcamp, and also created his own high school math club and taught online for LIVE, by Po-Shen Loh. Eli is equally passionate for music, and loves to combine math and music in his hobby of change-ringing, the centuries-old English practice of ringing mathematical permutations of tuned bells. For those of you near Boston, there are change-ringing bells in Old North Church, one of less than 50 change-ringing towers in all of North America, if you want to learn to ring tower bells. Sadly, Eli has only ever rung on handbells. Despite the deplorable state of Eli's towerless change-ringing, Eli has managed to overcome his grief, and is excited to join the Cambridge Math Circle to continue sharing the joy of math with as many people as he can.

Elisa is a rising sophomore at Harvard College planning on double concentrating in social studies and statistics from Malaysia. She loved participating in UKMT math challenges in high school and getting to learn about math in a fun, collaborative environment. Over the summer, she is working on research on political knowledge with Professor Holland as well as at the Harvard Business School on the role of AI and digital media in engagement with the arts in collaboration with the Harvard Art Museum. Elisa also plays touch rugby and quadball (real life quidditch) and loves going to concerts, watching musicals, and collecting vinyls.

Filip comes from Serbia and is doing a physics PhD in France. He found out about CMC when he was in the final year of his bachelor's degree, where he studied mathematics and physics. Three years later, he's still at CMC, excited to teach math. The thing that makes Filip the happiest about teaching is knowing he's making a change and passing on his passion for mathematics to others. Besides studying, he likes playing guitar, making origami figures, and watching TV series. He's also trained in gymnastics, so he can do a handstand and a backflip!

Francisco graduated from Swarthmore College with a B.S. in Engineering and B.A. in Mathematics. Originally from Paraguay, he fell in love with math and science through competitions, participating in math, physics, chemistry, and astronomy olympiads, eventually representing his country at the International Mathematical Olympiad (IMO). Programs such as Canada/USA Mathcamp and the Modern Mathematics International Summer School (MoMISS) also provided support and encouragement to help him decide on pursuing further mathematical education. It is in the spirit of such programs that he wishes to continue the tradition at CMC. In his free time, he enjoys reading/collecting books, playing 2D platformers, and watching anime.

Hannah is an undergraduate at Harvard College studying astrophysics and integrative biology. She loves solving puzzles and applying mathematical concepts to help understand how the natural world works. Besides teaching math, Hannah is also involved in the on-campus astronomy club, and last summer, she worked as a science communicator under the dark skies of Utah. Outside of the classroom and observatory, she spends her time hiking, making pottery, and cooking! Her life goal is to visit all 63 U.S. National Parks (she's at 28 right now).

Hugh is a student at University of Massachusetts Amherst majoring in Math and Linguistics with a minor in Latin. Math has been Hugh's passion for as long as they can remember; they grew up reading math books such as The Number Devil and Proofs Without Words just for fun. When Hugh started tutoring other students at CRLS, they discovered how much they enjoy helping others work through challenging math. In their free time, Hugh enjoys board games and tabletop roleplaying games, playing the trumpet and guitar, and tackling the daily New York Times crossword puzzle. Hugh is excited to connect with kids at CMC who share their passion for math.

Isabel is a fourth-year undergraduate at MIT studying mathematics, and is particularly interested in probabilistic and extremal combinatorics.  She loves the open-ended approach to mathematics that math circles entail, and she loves coming up with interesting new ways to motivate and explain difficult math concepts.  When she's not solving math problems, Isabel enjoys baking, sewing, walking long distances, and swing dancing.

Joy is a first-year double major in Math and Physics at MIT. She first got into math in elementary school through a math circle, and is excited to spread the joy of math to others. Outside of math and physics, Joy is an aspiring circus clown--on any given day, you can find her juggling, unicycling, or both at the same time!

Kalina graduated with a BA in Computer Science from the University of Cambridge in 2023. She's been working summers at Canada/USA Mathcamp for the past 5 years and recently joined CMC. She loves teaching math to  teenagers and kids and seeing them get excited about it. In her free time, she enjoys baking, cooking, bouldering, and drinking hot chocolate. She once managed to go to school as her identical twin sister for a full day without anyone ever realizing.

Katri's academic background is in law and economics. Her daughter loves math, which is why she came to CMC as a volunteer instructor. Katri loves learning by playing pedagogics, which makes CMC's approach to math enrichment a perfect match for her family. She loves spending her free time with her family and enjoying long walks and good food. Katri comes from the country of Northern lights, and she's a good friend of Santa Claus.

Laura is a math master's student at the University of Waterloo in Canada, where she counts ways to color things. She studied math and math teaching at Harvard and also teaches at AoPS and various other math enrichment programs. In her free time she currently enjoys doing puzzle hunts, playing board games, folding modular origami, running, weightlifting, walking up the 20 flights of stairs to her apartment, and drinking lots of coffee.

Liliana holds a bachelor’s degree in Global Business, Finance, and Governance from the Warsaw School of Economics. She has experience tutoring students for the SAT, where she developed a love for helping others tackle challenging concepts. Liliana is particularly excited about CMC's creative approach to making math engaging and accessible for kids in diverse learning environments. Outside of teaching, she enjoys cooking, practicing yoga, and surfing. Liliana is also a certified sommelier, but didn´t pursue that career path.

Loralei is a junior at Harvard College studying Physics with a secondary in Energy and the Environment. She participated in after-school math enrichment programs as a child, making her passionate about creating interest in the subject, especially among children from underrepresented communities and backgrounds. She loves CMC's creative and expressive approach to math. Outside of studying and teaching, Loralei enjoys staying active through weightlifting and pilates. She was also a competitive short-track speed skater for 10 years!

Luke graduated from Harvard College in 2024 with a degree in math. He enjoys coming across efficient ways to prove why mathematical ideas are true and talking about them with others. He's also interested in neuroscience and philosophy, but math became his favorite subject once he entered college because he was introduced to proofs. Aside from math, he enjoys annihilating his friends in Mario Kart, telling bad jokes, and eating cookies.

Luke is a junior at Harvard College studying mathematics and physics. He's passionate about math education and fostering curiosity and discovery; he came to CMC because of the organization's innovative approach to math enrichment. Outside of work, Luke enjoys playing and watching competitive video games, as well as cycling. His hometown is Christchurch, New Zealand.

Luna is a first-year student at MIT, planning to major in math. She's always loved learning about math, especially recreational mathematics, and more recently, she's taken an interest in showing that to others. Luna thinks that giving young people the opportunity to see math beyond the rote calculations in K-12 curriculum is the best way to get them interested in what can be a really lovely subject, and hopes that CMC can bring those chances to more young learners. In her spare time, Luna likes to learn about linguistics, constitutional law, solving puzzles, and playing video games (quickly). She also speaks toki pona, a constructed language with just 120 words!

Maria has loved math her entire life. She loves the beauty and elegance of a good proof, the ways concepts click together and connect in unexpected ways, and the way the grand edifice of mathematics rises from humble foundations and reaches the clouds. She also loves teaching -- particularly the moments when students suddenly see something they didn't before, and a light shines in their eyes. In her free time, Maria square dances, bakes, writes code, and reads stories. She also embroiders and has embroidered several designs based on mathematical patterns, including a Sierpinski triangle!

Maya is a senior at Harvard College, studying math and education. She's loved math as long as she can remember, and she attended Math Circle when she was in elementary school. Besides teaching math at CMC, Maya mentors at Girls' Angle, is a course assistant for Group Theory, and leads religious services for young children. She likes to read, cook, and make her own jewelry when she has time to spare. Fun fact: Maya has officiated a rabbit wedding!

Michelle studies applied mathematics and computer science at Brown University. She loves teaching and helping others to enjoy math and puzzles. Michelle has taught at multiple math camps and programs since she was in 8th grade. She has been to Canada/USA Mathcamp three times and, during high school, she competed in competitions like AIME and ARML. In her free time, she loves rock climbing, board games, and learning new recipes. A fun fact about her is that she has a cat with only a 3-inch tail!

Nataliya Yufa first got hooked on teaching math in 1st grade, when trying to solve a particularly hard math problem while walking home from school with a friend. As an undergrad at MIT, she got hooked on mathematical research - working in knot theory and algebraic geometry applied to materials science. While working on her Ph.D. in physics in Chicago, Nataliya caught the teaching bug, working with undergrads at U Chicago, and K-12 students and adults in STEM outreach. On the South Side of Chicago, where the inequities in educational opportunities are particularly great, she identified math as the thing that would hold back low-income, underrepresented students from high-paying, stable jobs in STEM. Nataliya worked for 2 years as a researcher at a math education nonprofit, and eventually transitioned to the classroom, and then co-founded The Cambridge Math Circle with Mira Bernstein. In her free time, Nataliya likes to play piano, bake and go for slow runs with friends. 

Raunak joined the Harvard Biophysics PhD program in the fall of 2023. Before that, he majored in math and biochemistry at the University of Chicago. He was also a teacher for Math Circles of Chicago, where he loved watching students' excitement when tackling fun math problems. Originally from Houston, TX, Raunak enjoys singing in choir and watching soccer. He used to perform stage magic as a kid.

Saba is a first-year PhD student at Harvard University. She graduated from Harvard College in 2023, where she studied electrical engineering and math. She fell in love with math when she began learning proofs. Saba loves teaching for CMC because she enjoys helping students develop confidence in their problem-solving abilities. In her free time, she likes to run, produce music, and make robots.

Sam is a junior at Tufts University studying math. He was attracted to CMC after his work as a tutor in the Boston area. He loves seeing how different students approach the same topic/problem with unique perspectives. Outside of academics Sam sings acapella in Tufts’ S-Factor and plays trombone in the student-lead jazz band. A fun fact about him is that he loves cooking and trying new foods.

Sanath studied math and physics at MIT and is currently a 5th-year graduate student at Harvard University, where he studies math. He enjoys the feeling of finally understanding a concept after struggling with it, and he loves helping students get to that point! In his free time, Sanath likes to run, play the drums, and listen to rock/metal music.

Simran is a senior in high school. She is passionate about problem-solving and has attended the Program in Mathematics for Young Scientists (PROMYS) and participated in competitions like the American Invitational Mathematics Examination (AIME). She has been teaching since ninth grade and enjoys encouraging students to slow down and appreciate mathematical discovery and the problem-solving process. Her other interests include running marathons, singing ballads, cooking different cuisines, and telling stories.

Sophia studies mathematics at MIT (class of 2026). She's passionate about teaching math to kids and has taught at CMC since spring 2023, as well as for other math outreach initiatives. Sophia enjoys walking/running/climbing/frolicking in nature, making bad puns, and spinning things that are on fire. Her favorite dinosaur is the Parasaurolophus.

Sovannjet is an MIT student (Class of 2027) studying biomedical engineering and materials science, with strong side interests in math, music, and linguistics. She is a huge believer in the self-discovery and artistic beauty of math and seeks to motivate problems and facilitate creative problem-solving and genuine understanding. She also loves lettering, making ambigrams, and rhyming, and is involved in a cappella, musical theatre orchestra, puzzlehunt writing (e.g., MIT Mystery Hunt), and quizbowl at MIT.

Yulia holds MS degrees in Applied Math and Electrical Engineering. She loves teaching at the Cambridge Math Circle.

Yusuf is a junior at Harvard College studying mathematics and computer science. Growing up, he fell in love with math through passionate teachers in his math club and school, and started participating in competitions like MathCounts, MathCON, and AMC. He joined CMC to teach students who are in the place he once was, and to foster the same love for mathematics. When he isn't solving math problems, you can find Yusuf playing and studying chess (and chess puzzles!).