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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:

Center DirectorMartha Gagnon, Center Director

With a BS in Management Information Systems from NH College (now SNHU), Martha Gagnon set out on a 30 year career in the computer industry. Now Martha begins a new chapter with Mathnasium, bringing a background in Quality Assurance, as well as PC Training, Programming and Technical Support. Over the years, Martha has worked with children through school volunteer programs and coaching softball. In opening the first Mathnasium in New Hampshire, Martha hopes to help children in the area come to enjoy math as much as she does. Martha and her husband, Gary, live in Hooksett, where they raised two children, Philip and Andrea Gagnon.

InstructorAlicia Cozza, Lead Instructor

Alicia joins Mathnasium having several years of experience in tutoring students in Mathematics. She holds a Bachelor of Arts from Oberlin College with a dual major in Computer Science and Mathematics. Alicia has worked in the Software Quality Assurance field, with an emphasis in the area of automated testing. Having used both of her majors from Oberlin in various positions, Alicia decided to pursue Math Education and completed work toward a Master's degree at Tufts University in Teaching Mathematics. She is an avid practitionor of yoga and an animal lover, with lots of pets. Alicia lives on a horse farm and loves horseback riding


Cassie Hayes, Instructor

Cassie Hayes is a High School Math Teacher, certified by the state of New Hampshire. She teaches full time at Nashua High School North. Prior to joining the staff at Nashua North, Cassie taught at Manchester Memorial High School and Hillside Middle School. Her experience teaching all levels of Algebra, Geometry and other math courses makes Cassie a valuable contributor to the Mathnasium team. Cassie graduated Summa Cum Laude from the University of Rhode Island with a double major in Education and Mathematics. Currently, she is working on her Master's Degree in Education at SNHU. She grew up in Manchester and lives here with her husband, Corey, who is also a teacher. Cassie enjoys making a difference in the lives of students.

InstructorLisa Parsons, Instructor

Lisa studied math at Clarkson University in upstate New York, where she earned a B.S. in computer science, and worked as a computer programmer before switching gears for a master's degree in social psychology at UNH. She studied under the director of the university's Center for Excellence in Teaching and Learning and co-wrote a paper on teaching nontraditional students at campuses like UNH-Manchester. She went on to teach introductory classes, including statistics, to UNH students. While taking some time off for family, Lisa began working as a writer, book reviewer and contributing editor for the weekly newspaper The Hippo, where she now works as a copy editor. In her spare time she likes to explore books, the outdoors, and exotic cacao varieties.

InstructorMichelle Kelly, Instructor

Michelle Kelly is a middle school math teacher, certified by the state of New Hampshire. She teaches 7th and 8th grade math at the Armand R. Dupont School in Allenstown, NH. Here she also enjoys working with students outside of the classroom as an advisor for student council and the score keeper for home basketball games. Michelle graduated Summa Cum Laude from Plymouth State University, earning a Bachelor of Science in Mathematics and a Middle School Teacher Certification for 5th-8th grades. At Plymouth State University Michelle enjoyed her time playing on the field hockey and softball teams as well as being an active member of the mathematics club. 

Melissa LaRocca, Instructor
Melissa LaRocca is a 2015 graduate of Northeastern University.  She graduated summa cum laude with a BS in Behavioral Neuroscience and plans to begin work on her master’s degree in genetic counseling in the fall at Mount Sinai Hospital in New York City.  Melissa has a wide variety of experience working with children.  Most recently, she was a research assistant at Boston Children’s Hospital, serving as the main contact for recruitment and enrollment in a genetics research study.  Melissa  has worked as a mentor at the Science Club for Girls in Boston and as a ski instructor. Melissa is a runner and a skier and enjoys the outdoors.