Mathnasium 354 W Foothill Blvd, Upland California 91786 (909) 660-6780

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Opening September 2021 / Join Mathnasium@home before our new locally owned and operated center opens in a convenient location near you.

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:

CenterDirectorTitus Tjahjadi, Center Director 

Titus earned his degree at California Polytechnic Pomona, with a major in Computer Science.  His ability to help children understand the concepts of math and the demand for his services is what prompted Titus to open a Mathnasium Center in Upland, CA.  Titus is passionate about making children knowledgeable and successful in understanding Mathematical concepts, all while having fun! He believes that being fluent in Math not only boosts a child's confidence but also empowers them to reach their fullest potential. This passion is what drives him to be a proud member of the Mathnasium Family.

Fun Facts About Titus:

  1. Titus began his career with Mathnasium in 2007 as an instructor
  2. Titus struggled with math until 8th grade and with hard work and support got on the Honor Roll!! 
  3. Titus has competed in Karate Tournament, marathons, and mixed martial arts tournament in his spare time
  4. Titus rescued one puppy and loved him so much! His name is Retzell Cliff.

If you have any school events or sponsorship opportunities you would like Mathnasium to be involved in!!

Please feel free to send sponsorship information to and Titus will be in touch!