Mathnasium 100 W Higgins Rd, #H-10, South Barrington IL 60010 (847) 783-5500

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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:

Juli Hammershoy, Center Director 

I am Juli Hammershoy and I serve as Mathnasium of South Barrington's Center Director!  I am passionate about children's education.  I believe every child has the potential to succeed given the right tools, which is why I am excited about our program.  I hold a Bachelors degree in Early Childhood Education and have 30+ years of experience in the education field.  It is a pleasure to work with so many families and see the progress each student makes.


Aarul Dhawan, Instructor

Aarul is a Senior currently enrolled at Barrington High School, and before his work at Mathnasium, he was a tutor for lower grade students in the Barrington 220 School District. Some clubs he participates in at his school are the Science Olympiad Team, Varsity Congressional Debate Team, Math Team, which he has qualified for state in both years he has participated, and Set Crew Head, in which he helps build the set for musicals and plays. Aarul decided to work at Mathnasium because he likes teaching other students, but he wanted to move to a more professional environment. In the future, he wishes to major in Computer Science and achieve a Ph.D. in Nanotechnology. 

FUN FACT: Aarul enjoys traveling across the world and visiting amazing places.


Ryan Ford, Instructor

Ryan is a senior at the University of San Diego, where he studies Integrated Engineering with a concentration in Biomedical Engineering. He plays on the club soccer team at USD and is an Eagle Scout. Ryan chose to work at Mathnasium as he has had experience as a camp counselor and assistant coach for youth sports. 

FUN FACT: Ryan has a pet duck and chickens. 



Brandon Kim, Instructor

Brandon is currently a senior at Hoffman Estates High School. He runs track and is a part of many clubs like the speech team and BPA. He enjoys playing the piano and basketball with his friends in his free time. Brandon has loved math from an early age, so he saw Mathnasium as the perfect place to apply his knowledge. In the future, he hopes to be 6 feet tall and become a surgeon.

FUN FACT: Brandon can juggle.

Shikha Shah, Instructor

Shikha will be a senior at Hoffman Estates High School this year. She is part of her school’s dance team and is also very active in Student Council and HOSA. In her free time, she likes traveling, trying new foods, and shopping. Shikha enjoys working at Mathnasium because she loves to see kids become passionate about math. She was inspired to work here after being a preschool teacher for a year. In the future, she hopes to pursue a career in engineering or math.

FUN FACT: Shikha and her brother were born on the same day, two years apart.

Mann Sheth, Instructor

Mann is a junior at Bartlett High School and is currently in the academy for Engineering and High Technology. He is the president of a Future Problem Solving club and plays basketball for his school. His hobbies include painting, sewing, and discovering new music! Mann chose to work at Mathnasium to help students realize that math doesn’t have to be a chore but instead a useful tool in life, and in the future, he wishes to be an engineer. 

FUN FACT: Mann and his pet bird enjoy watching reality TV.

Ryan Fryer, Instructor

Ryan is a senior at Barrington High School. He runs on the Cross Country & Track teams and is a member of the Latin Club and Fellowship of Christian Athletes. Ryan chose to work at Mathnasium to help others succeed and learn to do their best. In the future, Ryan wants to major in Computer Science. 


FUN FACT: Ryan is a captain of the Cross Country team.

Sia Joshi, Instructor

Sia is currently a senior at Barrington High School. She is involved in various clubs at school, including Lincoln-Douglas Debate, Girl Code, and Future Health Care Professionals. In her free time, Sia enjoys baking, finding new movies, and watching sunsets with her friends. Before coming to Mathnasium, she tutored high school students in chemistry and SAT topics. She realized she enjoyed teaching students and knew Mathnasium was a great professional environment to continue this passion. In the future, Sia hopes to pursue a career in medicine. 

FUN FACT: Sia broke her right arm in 3 places twice.