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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:

Robyn Steiner, Owner and Centre Director

 Robyn has over 12 years of teaching experience in the York Region District School board.  She holds a Master of Science in Education, is certified as a specialist in special  education, and holds additional qualifications in math, autism, reading and english.  She  has taught primary, junior, intermediate and special education math.  

 Having been an educator in the public school board and a mother of two little girls,  Robyn understands the challenges children face in today's classroom.  She believes that  every child can succeed in math if given the right tools.  

 Her passion for making math fun for kids is what led her to join the Mathnasium family.  

Melissa Stallone, Centre Manager 

 Melissa is currently in the Mathematics for Education Bachelor of Specialized Honors  Program and the Concurrent Education Program at York University.

 Prior to Mathnasium Melissa worked as a private tutor specializing in high school  mathematics.  She has volunteered her time teaching math at Learning Disabilities  Association of York Region, as well as at Father Bressani CS and St. David CES.  

 Aside from teaching math Melissa loves playing sports, travelling when she can and  learning American  Sign Language.

Rebecca Smith, Centre Director

Rebecca is excited to join the Mathnasium family.  She has spent the past several years working with children with autism, helping them integrate into community programs.  She has a background in graphic design and fine arts, as well as many years working in sales and marketing.

Rebecca brings a unique perspective to the Mathnasium team.  Combining her many years of working with children with her years in the marketing world, makes her the perfect person to help promote the Mathnasium program.

Adam D'Andrea, Lead Instructor

Adam is currently in his 3rd year at York University studying Kinesiology and Health Sciences (Bsc).   Prior to Mathnasium Adam has tutored high school mathematics including Principles  of Mathematics, and Functions.

Adam loves soccer and has volunteered his time as an Assisstant Coach at St Joan of Arc Thunder Jr. Girls team.   Adam has been playing soccer for 12 years now with the Vaughan Soccer Club and the Kleinburg Nobleton Soccer Club.  Adam's upbeat teaching style keeps our students focused and loving learning math!

Adams favourite things include, sports, more sports and pizza!

Amit Grewal, Instructor

Amit is currently pursuing his Masters degree in Elementary Education at Medaille College in Buffalo, New York.  He developed a love of math thanks to his grandfather, who used to give him math problems at an early age.

Prior to Mathnasium, Amit spent time as an independent tutor, tutoring elementary and high school students in English, Math, and Science.  Amit also volunteers with a special education and ESL class in Brampton.

Marc Motica, Instructor

Marc graduated with a Bachelor of Mathematics at Trent University.  He was a student teacher as part of his teaching program at Trent and has always wanted to continue his love for teaching after graduating.

Marc has always thought that mathematics was an excellent way to develop reasoning and problem solving skills.  He excels at helping students understand the many different ways to solve a problem and teaches with the appropriate method for them.

His favourite activities include video and board games, playing chess and travelling!

Alex Kowalski, Instructor

Alex has been with Mathnasium for over two years! He is a fourth year Finance student at York University. Alex enjoys campus involvement; whether it be volunteering at charity events or competing in TMX Option Trading competitions. Alex loves to use real life examples when teaching to ensure children understand and apply  basic mathematical skills in their everyday world.

When Alex isn’t studying, you can find him playing board games, watching Netflix and skateboarding!

Adam Devecseri, Instructor

Adam is a Mechanical Engineering graduate from The University of Ottawa. Adam loves that Mathnasium focuses on the basics in mathematics rather than memorization methods. Adam is an audio engineer and loves thinking of new small business ideas.

Adam’s hobbies include making music and drinking coffee!


Kevin Phan, Instructor

Kevin is currently pursuing his Bachelor in Science and Technology Studies at York University. His love for math started in elementary school when he fully mastered multiplication before anyone else in his class could. Math has always been his favourite subject because of the rational thinking and complexity with numbers. 

In his spare time, Kevin loves to watch movies, play video games and collect. His favourite video game series is Monster Hunter and favourite movie is Sword of the Stranger.

Jacob Newman, Instructor

Jacob is currently pursuing a Bachelor of Commerce Finance and Economic degree at Ryerson University. Prior to joining Mathnasium, Jacob has applied his passion for math during his summer co-op positions allowing him to bring real-world situations to every math problem. Jacob enjoys participating in several case competitions that revolve around finance, discussing the latest sports news and spending time outdoors. His love for teaching math reasonates from helping his friends throughout high school and his drive to take on new challenges

Trevor Tsuji, Instructor

Trevor is a graduate of Computer Programming at Seneca College and of Information Technology Management at Ryerson. From coaching baseball and hockey to teaching outdoor survival skills, Trevor has always had a love for teaching.

Trevor loves hockey, baseball, golf and football. He has played hockey for over 20 years and teaches kids to skate. He also volunteers at the Japanese Canadian Cultural Centre.

Trevor Pu, Instructor

Trevor Pu is working as an Electrical Engineer in Toronto and graduated from Dalhousie University. He enjoys teaching math and sharing his unique math techniques to children. Trevor is always thinking about a better way in which he can combine his Chinese Education background with the Canadian Education system to make learning more efficient.

He was also a professional badminton coach back in China and is passionate in all smart home applications. Trevor believes the smart home system will change the way of living in the future.

Chief Instructional OfficerLarry Martinek, Chief Instructional Officer  (Headquarters)

Larry has spent his entire career finding a better way to teach math. From inner city to public schools, to acclaimed magnet schools, to leading private and parochial schools, Larry has served as both a classroom teacher and as an educational consultant. He has designed curricula, teaching strategies, and teaching materials designed to help students and teachers learn math more effectively. He has trained teachers in the art and science of boosting student's ability to "do" math, thereby increasing student's math scores and feeling of self-worth. Larry is the developer of Mathnasium's educational program - one of the most comprehensive and innovative curricula ever produced for teaching math.

The Difference in Mathnasium Instructors

Mathnasium instructors are more than just tutors. They are math experts who are passionate about mathematics and teaching children in a way that makes sense. Our instructors are different from typical tutors because they have all been trained to focus on your student's long-term mathematical development, including the development of Number Sense.

In each session our instructors will interact with and engage your child. Their goal is to help students understand their own thinking. Instructors use unique questioning methods to draw the answers from our students rather than use a "lecture" style method often used in schools and by private tutors.

Our rigorous hiring process is designed to ensure we hire only the best. Each candidate is thoroughly tested on their math ability, including all critical elementary and high school topics. All instructors must have teaching, or tutoring experience with children. As part of the interview process, all instructors are expected to complete a trial tutoring session where we observe their teaching style and interaction with kids.

Mathnasium receive training on the proper teaching style and how to teach the Mathnasium curriculum. This training is ongoing and is designed to improve the teaching and communication methods used in our centre.