Mathnasium 4805 Briarcliff Rd NE, #108, Atlanta GA 30345 (404) 602-0101

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Our Team

Our specially trained math instructors will teach your child how to understand math in an individual setting; our unique approach enables us to explain concepts really well and lend a helping hand to every student. Our tutors foster a caring, encouraging environment that helps kids thrive and learn! Read below to learn more about our talented team:


 Ben Johnson, Center Director

Ben is a 2020 graduate of University of South Florida with a degree in Physics, and a minor in math and astronomy. Ben discovered his love of math in college while studying to earn his Bachelor's, and one day hopes to use his skills to undertake higher level physics research. While he's not working or studying, he enjoys going on hikes in North Georgia and watching movies. His favorite number is 299,792,548 because it's the speed of light in meters per second, and has a broad range of applications in physic and engineering! 




Dr. Frank Cao, Owner

 Frank received his Ph.D. in Biological Sciences from the University of Buffalo in 1997.   He moved to Atlanta in 1999 and worked at Emory University as a Post-Doc for a   number of years, before joining CDC as a Research Fellow working on infectious diseases. As a scientist, Frank has worked on many different projects and has published over a dozen peer-reviewed research papers.

 Strong mathematical skills have always benefited Frank in his research, as well as other parts of his life. Ever since learned about Mathnasium, and discovered how great it's been changing kids' lives and preparing them for their future success,   Frank has decided to become an owner. He is thrilled to be the new owner of   Mathnasium of Tucker since Apr. 1, 2020, and is looking forward to contributing greatly to the success of this Center.

Favorite Number: "7, because I was born on the 7th, and I wore #7 jersey for both my high school and college soccer teams."

Favorite Math Joke: "What is the volume of a pizza with a radius of Z and thickness of A? Pi-Z-Z-A"

Fun Fact: "My first ever gift growing up was a Rubik's Cube from my brother! I loved it so much that I developed my own algorithm to solve it as a teenager."

"I Love Mathnasium because I love math, and I love to be around kids!"


Celso Torres, Online Center Director

Celso graduated with a B.S. in Systems Engineering with a minor in Computer Science from Washington University in St. Louis. He lived in Washington D.C. for a year and a half working as a Data Analyst for Johns Hopkins before moving back home to Atlanta.

Celso enjoys listening to music and exercising in his free time. He enjoys observing and learning about the complex interweaving of various educational disciplines, particularly with regards to sociology, anthropology, psychology, and physiology. 

Favorite Number: "10 because it's easiest to run calculations with."

Favorite Math Joke: "How do you keep cold in a warm room? You go to a corner because it's always 90 degrees!"

Fun Fact: "Octopuses have individual "brains" in each of their arms which allow them to independently move of one another. Whales will sing complex songs that can last up to 30 minutes!"

"I love Mathnasium because it's a fun environment where complicated math topics are broken down into friendly, digestible pieces."  


Jonas Iskander, Instructor

Jonas took Calculus in 8th grade, and during high school he quickly accelerated through introductory college-level math courses, which he took at John Hopkins CTY Online, Dual Enrollment at Emory, and joint enrollment at Georgia Tech. He has also participated in a research experience in number theory headed by Professor Ken Ono, for which he received the Spirit of Raminjan Award two years in a row and from which he became a co-author of four papers on a variety of topics in number theory. He is currently a freshman at Harvard pursuing a degree in pure math. Although he loves exploring higher-level math topics, he has a deep appreciation for the fundamentals of the subject. 


Favorite Number: "808,017,424,794,512,875,886,459,904,961,710,757,005,754,368,000,000,000 because it is the sine of the Monsters group, which is the largest of the spasdic finite simple groups."

 Favorite Math Joke: "Why can't you grow corn in 71/72/? Because it is not a field! Follow up... why can't you grow corn in 71/62/? Because it is an abstract Mathematical object!"

Fun Fact: "I know how to unicycle and juggle (and to some extent both at once)."

"I love Mathnasium because I love giving people the opportunity to learn the beauty of Math."




Sam Sherman, Instructor

Sam is detailed-oriented & enjoys challenges. With her strong communication skills and patience, she is able to find creative ways to explain problem-solving and make it fun for students. Sam encourages students to learn, not memorize, by creating a safe environment for them to be motivated and eager to explore on their own.


 Favorite Number: "13 is my favorite number because it represents stability for the future. It is perceived as an unlucky number, but it symbolizes what we can become to me."

Favorite Math Joke: "What is a math's teacher's favorite snake? A pi-thon!"

Fun Fact: "I love doing any form of artwork. Whether it is sculpting, crafting, painting, or collaging."

"I love Mathnasium because when I was younger I studied at Mathnasium. It had a comforting environment, so I was motivated & always diligent with my work."




Parthiv Biswas, Instructor


Parthiv has had a lot of experience tutoring others in Math. He believes the best way to teach something is to imagine yourself in their shoes. He is currently a senior at Parkview High School. Someday, he will be in the medical field because saving lives is very imortant. 

Favorite Number: "5 because I was born on May 5th."

Favorite Math Joke:"What did the acorn say when he grew up? Geometry! (Gee, I'm a tree)"

Fun Fact: "I have a big interest in Japanese culture even though I've never been to Japan."

"I love Mathnasium because it will give me the opportunity to expand a lot of the math skills that I have not used over the years."

Shruti Biswas, Instructor


Shruti is a senior at Lakeside High School, and her favorite class is math. She helps run the RedCross Club and is a dedicated memember of the Lakeside Mock Trial team. She has helped other students with math english, and she looks forward to helping the students at Mathnasium too. In her free trime, she like playing games and writing. 


Her favorite math joke is: Why couldn't the mathematician afford lunch? He could binomial. 


She loked Mathnasium because "It gives students the oppurtunity to succeed in their acedemic ventures. Every student should be given the resourses to prosper!"