S. B. Mushet
Mathnasium has been incredibly helpful for my daughter. Since starting Mathnasium last summer, she is excellin...
See more reviews here




S. B. Mushet
Mathnasium has been incredibly helpful for my daughter. Since starting Mathnasium last summer, she is excellin...
See more reviews here
Mathnasium of 4S Ranch's personalized algebra tutoring programs are designed to support students at every stage of their math journey.
We help students transition from concrete to abstract thinking, mastering integers, fractions, order of operations, and introductory variables while building the algebraic reasoning needed for Algebra 1.
Our caring tutors guide students through multi-step equations, linear functions, graphing, and word problems using personalized plans that turn this pivotal course into a confident foundation for future math success.
We support students with fast-paced, complex topics—factoring polynomials, quadratics, exponentials, and logarithms—building advanced problem-solving skills needed for Precalculus and college-prep coursework.
At Mathnasium of 4S Ranch, we use a proprietary teaching approach, the Mathnasium Method™, which combines personalized learning plans with proven teaching techniques to help students build a solid foundation for algebra mastery.
From building a Number Sense to Socratic Questioning, our tutors work with students to expand their mathematical thinking while enhancing their critical thinking and problem-solving skills.
Our specially trained algebra tutors in 4S Ranch provide personalized face-to-face instruction in a supportive and engaging group environment. Using the Mathnasium Method™, our tutors teach math in a way that makes sense to the student, empowering them to truly understand and enjoy any algebra class.
We create assessment-based personalized learning plans to build upon what the student already knows, helping them close their knowledge gaps and gain confidence to excel in any algebra class.
Discover how Mathnasium helped Maddie transform her math skills. Initially struggling with the lowest math grades in her class, Maddie worked with our tutors using a personalized approach tailored to her specific needs.
Our Results
94%
Math Skills
of parents report an improvement in their child’s math skills and understanding.
93%
Attitude
of parents report improved attitude toward math after attending Mathnasium.
90%
Success
of students saw an improvement in their school grades.
Our Results
The Proof Is In The Numbers
Math Skills
of parents report an improvement in their child’s math skills and understanding.
Attitude
of parents report improved attitude toward math after attending Mathnasium.
Success
of students saw an improvement in their school grades.
Algebra Tutors Near You
We empower students in 4S Ranch to excel in any K-12 algebra class, with a focused, caring, and fun learning approach that delivers results. We proudly serve local communities and schools:
Specially Trained and Caring Team
Youngkun Weiss
Director of Operations
Youngkun's journey in education began with his pursuit of a bachelor’s degree in Pure Mathematics at Revelle College, University of California San Diego (UCSD). However, his passion soon shifted towards math education, prompting him to change his major to focus on secondary education. Since 2013, Youngkun has been actively involved in tutoring and various educational initiatives, demonstrating his commitment to education both within and beyond academia.
In January 2015, Youngkun became an instructor at Mathnasium, driven by a desire to make a direct impact on students' mathematical experiences. His dedication and leadership abilities quickly became evident, and by late 2017, he had transitioned to the role of Center Director. His continued success led to his promotion to Director of Operations in early 2023, where he now oversees multiple Mathnasium centers, including those in San Diego, Phoenix, Denver, Dallas, and Cincinnati.
Youngkun firmly believes that every student deserves to approach math with confidence. He is a staunch advocate of the Mathnasium method, which emphasizes a deep understanding of mathematical concepts and aims to eliminate the fear of math that often impedes student progress.
Committed to fostering the personal and professional growth of both instructors and students within his region, Youngkun strives to create an environment where learning math is a positive and empowering experience.
Karen Lossing
Executive Director
Karen is a powerhouse in the world of education, with a mission to make math click for every child. Karen’s career in education began in 2004 when she noticed her son was falling behind academically and wanted to help him and students like him get the best support available. Karen earned her master’s and teaching certificate and became a classroom teacher. During her years of teaching, she worked as an interventionist and district liaison for math curriculum and instruction.
After nearly a decade working in schools, Karen shifted gears to supplemental education in 2013 and opened the doors to her first Mathnasium franchise. Karen's first learning center has been recognized as a top performing location for several years in a row.
In addition to the work she does at her learning centers, Karen has served on the Mathnasium Franchise Advisory Committee, where her influence has been instrumental in shaping the company's direction and curriculum. Her efforts have led to the frequent adoption of new curriculum and student management systems, ensuring Mathnasium offers the best possible tools to help students excel and instilling confidence in her leadership.
Some of Karen’s achievements include:
Today, Karen and her family own a network of Mathnasium Learning Centers, empowering K-12 students to unlock their full math potential.
Libby Lossing
Director of Marketing
Libby brings a dynamic blend of leadership, education, and community spirit to her roles as Director of Marketing at Mathnasium.
Prior to joining the Mathnasium team full time, Libby attended the University of California, Los Angeles, where she was the Captain of the UCLA Spirit Squad and traveled the country as the school’s mascot. This multifaceted experience allows her to connect with a wide range of people and fosters a collaborative and engaging atmosphere in her work. In addition to her bachelor's degree from UCLA, Libby holds a certificate in School Management and Leadership from the prestigious Harvard School of Education and Business School.
Some of Libby’s exceptional achievements include:
A key member of the Mathnasium team since 2017, Libby is dedicated to creating a positive and enriching learning environment for all students.
Evan Lossing
Director of Human Resources
Evan's journey at Mathnasium began in 2013 as an Instructor. His passion for math education stemmed from his own academic journey. In elementary school, Evan overcame challenges in math with supplemental support, ultimately excelling and earning a spot in the accelerated program by high school. Fueled by a desire to help others experience similar success, Evan pursued a bachelor's degree in business management at Texas Tech University. Upon graduating, he leveraged his education and Mathnasium experience to excel as our Director of Human Resources.
Evan is relentlessly committed to providing exceptional customer experiences. His passion for understanding and meeting the needs of our students and their families drives him to continually seek out new knowledge and strategies. From staying on top of industry trends to immersing himself in educational podcasts and webinars, Evan is always on the forefront of customer service best practices. His dedication to creating positive and lasting relationships with our students and their families is evident in everything he does.
Evan recognizes that happy employees who are thoroughly trained and fully engaged with the work they’re doing produce the best results. Evan hosts weekly trainings and has built continued education programs to empower our team to continue to best themselves. His work was recognized by our headquarters and he was invited to help build national training programs to benefit our entire franchise network.
Some of Evan’s achievements include:
Steven Lossing
Executive Director
Whether they would like to attend sessions in-center or online, students can take 3 easy steps to enroll at Mathnasium.
All students begin their Mathnasium journey with a diagnostic assessment that pinpoints what they already know and the algebraic concepts they still need to learn.
FAQ
Our math learning center is in the 4S Ranch neighborhood in San Diego, within the 4S Commons Town Center mall right off Dove Canyon Rd. Click here to find us on Google Maps.
Yes, the Mathnasium of 4S Ranch provides Pre-Algebra tutoring to students of all skill levels, helping them learn and master any topic, including types of numbers, ratios and percents, factorization of natural numbers, and simple roots and powers.
Yes, our 4S Ranch tutors help students learn and master any Algebra 1 topic, from compound inequalities to linear equations, functions, exponents and radicals, quadratics, and irrational numbers.
Yes, our 4S Ranch tutors help students learn and master any Algebra 2 topic, including Polynomial arithmetic and factorization, rational exponents and radicals, logarithms, and trigonometry.
The Mathnasium Method™ is our proprietary teaching approach designed to help students learn math in a way that makes sense to them.
Our approach combines personalized learning plans with proven teaching techniques to build a foundation for math mastery starting with what students already know, addressing any learning gaps, expanding their mathematical thinking, and adding new concepts in sequence.
Unlike private tutors, Mathnasium's specially trained tutors use personalized learning plans and proven teaching techniques to help students learn and master algebra in an encouraging and engaging group setting.
Our tutors work with students of all skill levels, whether they are looking to catch up, keep up, or get ahead in their Algebra class.
At Mathnasium of 4S Ranch, students who are struggling or doing OK in their algebra class can bridge their learning gaps and increase knowledge level-by-level while transforming how they think and feel about math.
Advanced students, on the other hand, can expand their skills, explore topics beyond their math class, and achieve their greatest potential.
Every student begins their Mathnasium journey with a diagnostic assessment that helps us identify their skill level and learning needs. Understanding each student’s strengths, knowledge gaps, and academic goals helps us create personalized learning plans that will put them on the best path to math mastery.
Our algebra tutors provide face-to-face instruction in a supportive group environment.
Yes, our tutors will set aside time to help students with their algebra homework.
Mathnasium tutors can help students learn and master any middle school or high school algebra topic, including equations, functions, factoring expressions, and word problems.
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10543 4S Commons Dr Ste 175,
San Diego, CA 92127
| Call: | (858) 312-8888 |
| Text: | (858) 312-8888 |
| Email: | [email protected] |
Mon
3:00PM - 7:00PM
Tue
3:00PM - 7:00PM
Wed
3:00PM - 7:00PM
Thu
3:00PM - 7:00PM
Fri
3:00PM - 6:00PM
Sat
10:00AM - 2:00PM
Mon - Thu
3:00PM - 7:00PM
Fri
3:00PM - 6:00PM
Sat
10:00AM - 2:00PM
| Mon: | 3:00PM - 7:00PM |
| Tue: | 3:00PM - 7:00PM |
| Wed: | 3:00PM - 7:00PM |
| Thu: | 3:00PM - 7:00PM |
| Fri: | 3:00PM - 6:00PM |
| Sat: | 10:00AM - 2:00PM |
| Mon - Thu: | 3:00PM - 7:00PM |
| Fri: | 3:00PM - 6:00PM |
| Sat: | 10:00AM - 2:00PM |
Have questions? Contact us.