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Welcome to Mathnasium of RSM

Hello. I'm Roel Florentino, Owner/Center Director of Mathnasium of RSM, your neighborhood math-only learning center. We help kids in grades 1-12 understand math by teaching the way that makes sense to them.


When math makes sense, kids leap way ahead – whether they started out far behind or already ahead in math. Our formula for teaching kids math, the Mathnasium Method™ has transformed the way kids learn math for over a decade across 800+ centers in the US and Canada:

  • We know how to teach your child math.
    Our specially trained math instructors will teach your child how to understand math in an individual setting – our unique approach enables us to effectively explain math concepts and lend a helping hand to every student. Our tutors foster a caring, encouraging environment that helps kids thrive and learn!

  • We pinpoint your child’s learning needs, meet them where they are, and take them where they need to go.
    Mathnasium instructors use our unique assessment process to determine (with great accuracy) exactly what each child knows and what they need to learn. Next, we design a customized learning plan for teaching the concepts the student needs to master. It doesn’t stop there – our encouraging instructors continually check progress along the way to make sure kids truly understand and retain the concepts we’ve taught. The results are transformative – kids will see measurable changes in attitude, confidence, and school progress.

  • We will help your child overcome homework frustration.
    Our instructors will also set aside time to provide homework help. We help kids understand the homework assignment so they feel better prepared to complete the work at home – underscoring their understanding of concepts and transforming homework frustration into a welcome challenge.

About Our Center


Mathnasium of RSM opened in April 2013 to serve Rancho Santa Margarita, Trabuco Canyon, Coto de Caza, and surrounding neighborhoods. We are located in the Pavilions shopping center next to the UPS Store, La Fiesta, MIZU, and Rice and Spice Thai Cuisine.

Roel Florentino, the Center Director and Owner, has over 17 years of math tutoring and teaching experience and holds a California Single Subject Mathematics Credential as well as a Master's Degree in Education. He and his team of instructors are not only math experts, but are passionate about helping kids in the Rancho Santa Margarita area improve and excel in math through the school year and summer. 

Mathnasium of RSM is a member of the RSM Chamber of Commerce.

Call us today at (949) 888-6284 for More Information and see how we can help your child!