Mathnasium 5250 22 St, #30B, Red Deer AB T4R 2T4 (403) 872-6284

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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:

Larry Martinek, Chief Instructional Officer

Larry is the developer of Mathnasium’s educational program – one of the most comprehensive and innovative curricula ever produced for teaching math. As a classroom teacher, teacher-trainer, and consultant in public and top private schools – and father to a mathematically gifted son – Larry possessed a uniquely comprehensive view of education. Today, more than 40 years after Larry first developed it, the Mathnasium Method is providing children all over the world increased confidence, critical thinking skill and mathematical ability that last a lifetime.

While Larry does not work at this centre specifically, he is available for specific scenarios for guidance and advice. Please check this video about Larry Martinek "The Man Behind The Method" and how his son Nick continues inspire kids around the world:


CentreDirectorRiwan Prasatya, Co-Owner & Centre Director

Riwan is a Chartered Professional Accountant (CPA) and has worked for major energy companies such as Cenovus, Encana and ConocoPhillips. He has a BSc in Environmental Science; he also has an MBA degree in International Business from the University of Missouri, Kansas City. Witnessing how math did to improve his children's educational journey lead him to believe that math can change a child's life and he is eager to take part in helping other children change theirs through Mathnasium. 


​Yani Pratiwi, Co-Owner

Prior to opening her Mathnasium centre, Yani's professional area was in Management Consulting. She has an MBA Degree in General Management from the University of Adelaide, South Australia, and has worked for global consulting firms including Deloitte, BearingPoint and Hay Group (now Korn Ferry). Having passion in children education, Yani decided to bring Mathnasium to the Red Deer Area and is committed to bringing the proven Mathnasium method to the children in the community. She is a mother of three children .. or four, including the fur daughter


Ilena Simpson-Pineda, Instructor

Ilena recently completed her Bachelor of Science in Mechanical Engineering at the University of Calgary. She actively volunteers at Robogals, an international organization that inspires and empowers girls to pursue STEM education; seeing students that she helped understood the value in math and grew to truly enjoy it, had inspired her to move into the education field. That is why after working as a mechanical designer in an Energy company she has decided to return to school to receive a Bachelor of Education from the University of Alberta, majoring in physical sciences with a minor in mathematics. Ilena has always had a love for math and is fascinated with the applications of mathematics in more creative, hands-on, and less traditionally thought of math based careers and hobbies such as illustration, fashion design, and music.


Reuben Miller, Instructor

Reuben is studying for an education degree at Red Deer College and The University of Alberta for a Bachelor of Education, majoring in math. Born in Red Deer, Reuben loves to help others see the fun in math and the blessings that come from diligent study and hard work; he believes anyone can do math if they put their mind into it. If you want to learn to become a chess master, Reuben is the guy: he was the 5th best U18 chess player in all of Canada in 2018 and the Alberta Youth Chess Champion!  


Raka Prasatya, Instructor

Raka graduated from Hunting Hills High School and now is a student at the University of Alberta – School of Business, majoring in Accounting. Raka knows from experience that being good at math could boost one’s confidence, not only in math but also in other subjects. He thinks that if Mathnasium had been around when he was younger, his math experience would have been more fun, and he could learn math smarter than harder. He enjoys working with children, and had volunteered at an elementary school in Edmonton, teaching them things such as math and music; he likes to play the drums, trumpet, guitar, and keyboard.