Mathnasium 7850 N Silverbell Rd, #162, Tucson AZ 85743 (520) 407-6284

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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:

Owner/Center Director Master Certified by MathnasiumDevi Paolillo MS, MFT, Owner/Center Director Master Certified by Mathnasium

Devi combines her many interests and professional talents to create the best learning experience possible for students. She has been an elementary school teacher, supervised student teachers, taught workshops for teachers on best ways to teach; and worked with children, adults, and families as a psychotherapist. As the owner of Mathnasium of Marana, she is responsible for developing and supervising the instructors, as well as managing the business. Devi’s favorite part by far is direct teaching time with Mathnasium students.

Devi has had twenty-five years of experience as an educator and therapist working with children of all ages and stages of development. Devi was a consultant for an educational training and development firm that offered professional development workshops for teachers, she also prepared a community college for accreditation by teaching and assisting faculty to design and develop their curriculum to standards. Additionally, as a therapist she specialized in helping families with adopted children. Devi graduated from Mount Saint Mary College with a degree in Mathematics and Education. She earned a Master in Science from SUNY New Paltz in Special Education and a second Masters at Hahnemann University in Marriage and Family Therapy.

Devi incorporates all she has done with an open heart to serve the students and families who come to Mathnasium. 

Nirantha Balagopal, Director of Operations

Nirantha spent two years as an instructor at Mathnasium of Marana before returning to be the new Director of Operations! Her background includes a bachelors in Mathematics, a masters in Optical Engineering, 3+ years of engineering experience, 7 years of working at camps (for ages 7-17 in outdoor and STEM-learning based environments), and sitting on the board of a youth music & arts education nonprofit in Tucson. She is most excited about witnessing students' "Aha!" moments.  

Meg Pietsch, Director of Education

With a B.S. in Mathematics and Master of Arts in Teaching and Teacher Education (Secondary Mathematics), Meg enjoys sharing her love of math with students. She has been tutoring math for 30+ years. One of her greatest joys is working at Mathnasium: seeing students gain confidence and excellence in Mathematics. As a grandmother of 2, she enjoys spending time with family as well as hiking, traveling, and Sudoku. 

Karen Rutynowski, Admin Assistant

Karen has become a welcome part in our Mathnasium family by keeping us organized, providing support for instructors as well as students, and helping with customer relations. Along with receiving her B.S. in Information Technology and a M.Ed. in Elementary Education she has an extensive background in education. She left the UofA after almost 20 years. She then spent 17 years working as a Technology Specialist, Reading teacher, and an Information, Communication, and Technology aka Computer Science Instructor. Karen shares her hobbies of Reading and Computers with her two grandchildren.


Omar Beltran, Former Instructor

Omar graduated from the University of Arizona with a Bachelors of Science in Mathematics and Agriculture Economics. His favorite part about Mathnasium is helping students overcome their fear of math while making a positive difference in their lives. some of Omar's hobbies include playing chess and listening to country music.

Keri Palmer, Instructor

Keri graduated from Brigham Young University – Idaho (BYU-I) with a Bachelors of Science in Math Education. She has experience as a Teacher’s Assistant, a tutor, and teaching in a public high school. She loves helping students reach that moment when math not only makes sense, but suddenly becomes fun. Keri enjoys teaching in every capacity she can, from her two-year-old daughter, her students half-way around the world, and of course the youth in her community through Mathnasium! Education is her passion, and she aspires to receive her Masters of Education in the near future. 


Duane Durr, Instructor

Duane studied math at the Institute of Technology University of Minnesota with degrees in Mathematics and Operations Research. He retired from a career in healthcare administration and finance. Duane Tutored high school students frequently. He loves that eureka moment at Mathnasium when a student grasps a new concept - the expression on their face is priceless.


Ethan Louderback, Instructor

Ethan is a senior in high school, and currently attends Marana High School. He has a passion in math and plans on attending a university to get a degree in mathematics. His favorite part of Mathnasium is when he sees a student’s face light up after understanding a new lesson for the first time. Some of his hobbies include playing videogames, computer programming, and spending time with friends.

Pari Patel, Instructor

Pari is a junior in high school, attending Ironwood Ridge. Prior to being an instructor, she was a student at Mathnasium. She loved the one-on-one help that Mathnasium provided. Her favorite part about Mathnasium is being able to build connections with each student and be a part of their math experiences. Her favorite hobby is paying softball with her teammates and spending time with her family.