Mathnasium 1248 Clairmont Rd, #3C, Decatur GA 30030 (404) 974-4690

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Now Open In-Center-- by appointment only! Call 404-974-4690 for details!

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:

Center Owner and DirectorSam Younis, Center Owner

Sam graduated Cum Laude from Vanderbilt University, where he studied the social sciences and gained a deep appreciation for math and statistical analysis. He then earned an MFA in Theater from Columbia University, where he nurtured his creative side. Prior to owning Mathnasium, Sam has worked as an actor, writer, public servant, and tutor. As an actor, Sam has appeared on Broadway and in television and film. As a top-level field operations manager for the 2010 US Census, Sam collected and analyzed statistical data that would later become official 2010 Census records.  In 2012, Sam opened his first Mathnasium center in Los Angeles before moving to Georgia with his family two and a half years later.  Now firmly rooted in Georgia, Sam is also the owner of Mathnasium in Dunwoody and will be launching a new Mathnasium location in the Morningside neighborhood in the fall!  He has served on the Mathnasium Franchisee Advisory Committee, which helps guide Mathnasium Headquarters as it makes key decisions about the direction of the company.  His location in Decatur is consistently ranked among the top 40 out of 1,000 centers in the country and also earned an award from Mathnasium Headquarters for outstanding growth in its 2nd year of operation.   An advocate of both math and the arts, Sam is passionate about the Mathnasium Method because it enables kids to apply creativity to the understanding of math. It is his mission to help kids develop an excellent number sense and have fun along the way!


Chase Storbeck, Center Director

Chase is a Georgia native, having grown up in Decatur and Peachtree City.  He later attended Indiana University in Bloomington where he completed a Bachelor of General Studies with focuses in Music, Physics, and Sports Communications.  Chase then completed a certificate of Audio Engineering from Berklee College of Music.  After interning in Chicago, Chase returned to Georgia to teach audio classes at nearby Callanwolde Fine Arts Center.  Chase's teaching tenure began immediately after high school with his involvement in metro Atlanta middle and high school band programs.  Chase began working at Mathnasium in April 2016 and has really enjoyed being a part of the team, values, and atmosphere Mathnasium has to offer.  In his spare time, Chase enjoys writing music, playing sports, keeping up with his favorite teams, and grilling out with his friends and family.


Claire Kuykendall, Field Support Specialist

Claire joined the Mathnasium team in the summer of 2015 while she finished up her time at Georgia Tech where she majored in Applied Mathematics with a minor in Environmental Science. After graduation, she continued working at Mathnasium until she left for her post-graduate studies at the University of Glasgow in Scotland where she studied Environmental Statistics. Claire's love of math and helping others find their love of math brought her back to Mathnasium when she returned from her studies abroad. Outside of Mathnasium, Claire can be found at a concert, obsessing over all things Swedish, or binge-watching shows on Netflix.


Matthew Jones, Instructor & Education Specialist

Matthew graduated from Portland State University in 2013 with a B.S. in Physics and a Math minor. He moved to Decatur from Portland, OR in the summer of 2013 to spend time with his family and look into graduate programs. His research interests include numerical modeling, chaos theory, and nonlinear dynamics. Education has always been a passion of his, and Mathnasium, in particular, is a good fit for him to exercise that passion. The program at Mathnasium aligns well with Matthew's personal education philosophies, especially the aspect of making math more accessible and easier to understand on a fundamental level.  Matthew has been working at the Decatur location since its official opening in May of 2014.  His leadership has been instrumental in the growth of the center. Matthew enjoys riding bikes, and can often be seen riding around the Decatur area, most likely on his way to Mathnasium!


Austin Lang, Instructor

Austin is a "riddle, wrapped in a mystery, inside an enigma." Not much can be said about him except that the only thing he loves more than math itself is helping kids gain a love of math as well. Apart from his love of math, Austin has an infectious giggle that makes everyone who hears it smile. 



Ethan Adams, Instructor

Ethan was born and raised in the Canton area of Georgia and moved to Decatur in 2018 to major in International Relations and Music at Agnes Scott College. He tutored his peers in high school, but after graduation, he decided that teaching younger students would be a far more enriching opportunity. His motto for teaching is "be the type of teacher you wish you would have had in school," and he applies this motto by adjusting his teaching style to suit the needs of every student he encounters. His hobbies outside of Mathnasium are singing, creative writing, composing music, and napping competitively for sport.  


Sara Kathryn Wierwille, Instructor

Sara Kathryn is a student at Emory University as a math major. In her free time, she likes to garden and play with her two dogs. She enjoys sharing her love of math with others!




Noah Fitzer, Instructor

Noah, originally from Greenville, South Carolina, is a student at Agnes Scott College double-majoring in Philosophy and Music. While volunteering during high school with an afterschool outreach program, they realized that just a little bit of encouraging one-on-one instruction can make a huge difference in a student's confidence in math! Noah loves musical theatre and spends their free time singing and songwriting. 


Thomas Sowell, Instructor

Thomas has lived in Georgia his whole life, even attending Georgia Southern University, where he graduated cum laude with a BS in Mechanical Engineering. He loves all things math-related and has recently discovered a passion for tutoring. Outside of math, Thomas enjoys watching sports and playing the drums. 



Charli Harper, Instructor

Charli is a junior at Agnes Scott College with a major in biology. He loves animals and enjoys going on long walks with his dog and reading in his spare time.


Defne Tanyildiz, Instructor

Defne is a senior at the Paideia School. She has been tutoring kids her age and younger since elementary school. After leaving Istanbul and Brussels, she moved to Atlanta in 2017. Defne has been a Mathlete and Turkish teacher prior to working at Mathnasium. In her free time, she enjoys baking, reading, and binge-watching Turkish soap operas.


Dan Zhang, Instructor

Dan is a current sophomore at Emory University, studying biology and sociology on the pre-med track. He was born and raised in Auburn, Alabama, and he is a huge college football fan - War Eagle! Dan loves getting to know all kinds of people, so one of the reasons he enjoys working at Mathnasium is because he can build relationships with a diverse group of students. In his free time, Dan loves to play basketball, explore ethnic food in Atlanta, or just hang out with his friends!


Rachel Pullman, Instructor

Rachel is a third-year Math Major studying at Georgia Tech. She grew up in a big family south of Atlanta and loves working with kids!


Prateek Umashankar, Instructor

Prateek is a second-year student at the University of Georgia. He is currently studying Management Information Systems at the Terry College of Business. As a form student at Mathnasium, he loves engaging and teaching students to better their math skills!


Clarissa Hood, Instructor

Clarissa is currently a second-year medical student at the University of Louisville in Kentucky. She attended Emory Univerity where she obtained her BA in Psychology and Linguistics. She has always enjoyed working with children, helping them become better versions of themselves, and looks forward to becoming a pediatrician to further care for kiddos. 


Grace Harrington, Instructor

Grace is originally from Sharon, New Hampshire, and is now a college student at the Florida Insitute of Technology, double majoring in General Biology and Marine Conservation. She works on campus as a peer tutor in the Academic Support Center as well and really enjoys working with college students and young kids alike!