Welcome to mathnasium of Ontario
Welcome to mathnasium of Ontario

I have three children that go here and I have seen great improvements with all of them towards math. The appre...


Schedule Your Free Assessment

Take the first step towards providing your child with a solid math foundation. Give us a call to schedule your free trial session! Our meeting will give you and your child a sense of who we are, what we do, and how we can help. Call or complete the form on the right to get started.

Call: (909) 930-5838

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Contact us


  • 2598 S Archibald Ave, # I
  • Ontario, CA 91761
  • Call (909) 930-5838

Hours of Operation

Instructional Hours

Mon, Tues, Thurs 3:00 PM - 6:00 PM
Wed 2:00 PM - 6:00 PM

Office Hours

Mon, Tues, Thurs
3:00 PM - 6:00 PM
2:00 PM - 6:00 PM
By Appointment Only!
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Hello, my name is Sahar Emara, Center Director of Mathnasium of Ontario, your neighborhood math learning center. We help kids in grades “K-12” understand math by teaching in a way that makes sense to them.

We specialize in math-only instruction with a focused, caring, and fun learning approach that delivers results.
We proudly serve local communities and schools, including:

  • Ontario Mountain View Little League
  • Ranch View Elementary
  • Mountain View Elementary
  • Creek View Elementary
  • Grace Yokley Middle School
  • Colony High School

Dedicated to providing the best instruction

Our instructors are enthusiastic about math and specially trained in the Mathnasium Method. They create a caring and encouraging environment where your child will learn and thrive!

Meet the Teamgallery1

Instructor Spotlight

Sahar Emara
Sahar Emara is the proud owner and Center Director at Mathnasium of Ontario and Monrovia. Prior to opening her first Mathnasium center, she worked as a Center Director of the Mathnasium of Buffalo Grove. Her center has been successful in helping students develop and strengthen their math skills for (...)



One-on-One Assessment

Our unique assessment pinpoints what each child already knows and what they still need to learn.


Customized Learning Plan & Goals

Our detailed plan takes your child step-by-step from where they are to where they need to go.


The Mathnasium Method™

Our proprietary curriculum and teaching method fosters skills that take hold and build upon one another.

Latest News & Posts

Effects of the Pandemic

Dec 7, 2021 | Ontario Blog

Significant Decline in Standardized Test Scores An article by the Daily Bulletin explains how having the limited access to in person instruction during the viral pandemic lead to a significant decline in standardized test scores this year. The average ..

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