Mathnasium 7548 Preston Rd, #139, Frisco TX 75034 (972) 292-9886

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We follow the Frisco ISD Inclement Weather Protocols - if school is closed, the center will be closed as well for the safety of all.

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:

Alexis Vandercook, Center Director 

Alexis is a UTD gaduate! She loves being a part of Mathnasium because she enjoys getting the opportunity to work with kids and help make a difference in their everyday lives! Her favorite thing about math is that it is shared across all cultures and is the "universal language"!

Fun Facts About Alexis:

  1. Alexis has been the proud pet parent of cats, dogs, fish, geckos, bunnies, and even a spider!


Kaden, Assistant Center Director  

Kaden started his time at Mathnasium as a math instructor and has worked his way up to our Assistant Center Director! Kaden enjoys his time working with students and helping them understand math in a way that makes sense for them. His favorite part of teaching is getting to see when a concept "clicks" for a student and seeing their confidence grow!

His favorite part about math is the variety of ways to solve problems, and how that skill translates to the real world!

Kaden has loved math since he was very young, and is very excited to continue to share his enthusiasm with his students!

Fun Facts About Kaden:

  1. Kaden is the 2nd oldest in a family of 14 kiddos!
  2.  His favorite sport is hockey, which he has both played and coached
  3. Kaden competes in tournaments, ranging from video games to card games!


Evan Lossing, Texas Regional Director

Evan is the Director of Operations for Mathnasium of Frisco East. Prior to opening this Mathnasium center, Evan has been the owner/operator of Mathnasium of Allen, voted Best After School Program by the community and awarded by the Allen American. He has a Business Management degree from Texas Tech, was raised in the McKinney area.  Having struggled with math as a child, Evan is enthusiastic about helping every child in the Frisco community to truly understand math by teaching it in the way that makes sense to them. He has taught and tutored children of all ages, and he is committed to bringing the Mathnasium Method to the children in the community. Evan is a newlywed to a Prosper ISD teacher, so education runs through their hearts! 

Fun Facts About Evan:

  1. Evan began his career with Mathnasium in 2013 as an instructor
  2. Evan struggled with math until middle school and with hard work and support got on the preAP track 
  3. Evan has competed in Spartans, half marathons and a full marathon in his spare time
  4. Evan rescued one kitten and loved it so much he rescued another


Meet Our Family Ownership Team

Karen Lossing is the center director/owner of the math learning center Mathnasium of 4S Ranch.

Karen Lossing, Executive Director

Karen earned a Bachelor’s degree in Marketing from Penn State and spent ten years in the business community. After staying at home with her kids, she earned her Texas Teaching certification and went on to teach third and fifth grades and Special Ed in McKinney ISD for seven years. She served on the Response to Intervention team and was the district liaison for Math Curriculum and Instruction. Karen completed her Master’s degree in 2010 and, prior to opening Mathnasium, served three years on her elementary school’s administration team in both Prosper ISD and McKinney ISD incorporating and facilitating 21st Century learning standards.  

Karen has been a proud franchisee with Mathnasium since 2013 and looks forward to making math make sense to all the kids who learn at Mathnasium. Since opening her first location, Karen has been recognized by Mathnasium as a Top Performing Franchise Owner. Karen received the Exceptional People award in 2016 for her ability to hire and train one of the strongest instructional teams through Mathnasium. Karen has also been awarded in 2016, 2017, 2018, 2019 and 2020 for having Top Performing locations. She currently serves on the Mathnasium Franchise Advisory Committee, which helps guide Mathnasium Headquarters as it makes key decisions about the direction of the company. Often our center has the opportunity to pilot new curriculum or student management systems prior to global launches, allowing us to serve our students in the best way possible.

Steve Lossing, Executive Director 

Steve is the proud co-owner of multiple Mathnasium Learning Centers in Southern California, Arizona and Texas. Steve retired in 2018 from Petco, where he served as the Chief Stores Officer. He also served as the Treasurer and a Board Member of the Petco Foundation, a leading supporter of animal welfare organizations nationally. He now works full-time with his wife, Karen, two children, Libby and Evan and their terrific Mathnasium teams.  

Steve believes Mathnasium not only builds students' math skills, but also helps build their self-confidence. The Mathnasium method of teaching students math, the unique and customized curriculum for each student and the passionate team of instructors ensures that every student succeeds, whether they are catching up, keeping up or getting ahead!

Libby Lossing, Director of Operations

After serving as a seasonal Mathnasium Instructor since 2013, Libby graduated from UCLA in March 2017 and joined our team as the Director of Operations. While she is no stranger to the instruction and tutoring aspects of our center, Libby focuses on the community involvement side of our operations. She has founded Teacher Appreciation Programs in San Diego, California and Phoenix, Arizona with local school districts and news teams. If you have any school events or sponsorship opportunities you would like Mathnasium to be involved in, Libby is your girl! Please feel free to send sponsorship information to and Libby will be in touch!

In addition to her role as Director of Operations, Libby also serves as our Regional Director in Arizona, overseeing the learning centers in the Phoenix area. She is proud to partner with our Center Directors and Instructional Teams to deliver the Mathnasium Method to students across the Valley of the Sun.

Our Results‚Äč


Call 469-481-1502 and Learn More!