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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:

Ryan, Center Director

Ryan worked for several years as an instructor at Mathnasium of Tampa (Florida) before attending Florida State University, where he earned his Bachelor's in Economics and International Affairs. After relocating to the west coast, Ryan's passion for helping kids reach academic success brought him back to Mathnasium to serve as La Costa's Center Director. Ryan's strengths include building mathematical confidence, collaborating with parents to meet a student's individual needs, and explaining complex topics in ways that kids will understand. He hopes to create a fun environment where students can find meaning and success in their math eduaction.


Ryan I, Assistant Center Director

Ryan has a long history with Mathnasium in many seats.  He was a once a AP Calc student who was able to lock down great grades with a little extra attention to homework and test preparation. Next, he was a Math Beast turned Instructor. Years later, he is now La Costa's Assistant Center Director where he not only contributes to our instructional team, but maintains and improves our high level of customer service, parent relations, and operational responsibilities.

Claudia, Lead Instructor

Claudia relocated to the area from Massachusetts where she was a middle school Special Ed teacher. She is a career educator with a passion for helping students acheive their goals.  Her positive approach helps children gain confidence, which is an essential ingredient to learning and growing mathematically. She is a fantastic consultative resource.

Robert, Lead Instructor

Robert is a math pro and able to easily transition from young students to our high schoolers.  He is able to clearly explain math processes, calculations and problem solving so students build up their knowledge base with the right amount of support. This transitions well into the classroom.

Fred, Instructor

Fred is sharing a part of his retirement by dispensing his broad mathematical knowledge with our students. He is patient and thorough, making sure all steps are understood in the process. He works with our middle level math students in making prealgebra, algebra, and the prerequisite levels of math more easily understood.


Karen Lossing is the owner of Mathnasium of La Costa math tutoring center. Karen Lossing, Executive Director 

Karen is the hands-on owner of Mathnasium of La Costa. Karen has served as a 3rd, 5th and Special Ed teacher, math curriculum writer, and elementary school administrator. Karen has always loved math, and upon relocating from Texas  jumped at the opportunity to spend her day working with her team helping children in the Carlsbad / La Costa community to truly understand math by teaching it in the way that makes sense to them. 

Libby, Director of Operations

After a couple years of being a seasonal instructor in our center, Libby recently graduated from UCLA and has joined onto 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 center. So if you have any school events or sponsorship opportunities you would like Mathnasium of La Costa to be involved in, Libby is your girl!