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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:

CenterDirectorWalter O. Jackson, M.D., M.P.H., Center Director 

Each child's well-being, academic success and math really matter to me. I loved tutoring math when I was a math and biology undergraduate at Cerritos College and at the University of California, Irvine (UCI) and by helping my own children grow stronger in their math skill set. A strong math background was a keystone in the foundation for personal achievement in earning my medical degree from Yale Medical School and an M.P.H. from UCLA.  A world of opportunities ensued.  They enabled me to secure USAF medical school and emergency medicine residency training scholarships.  Through committed military service, I was able to rise to the rank of Lieutenant Colonel while serving my country during stateside active military duty, in the USAF reserve as a medical officer and flight surgeon and also in deployed status to Balad Air Force Base, Iraq. My life experiences will serve me well in leading our center to be the "go to place" for math learning in our community. Mathnasium is a powerful tool to help students realize their full academic potential and dreams. Mathnasium of Marina del Rey is a fun yet appropriately rigorous environment for math learning.  Our team of talented instructors will connect with your child to teach math in a way that makes sense to them.  At Mathnasium, students lose their fears and gain confidence in math thus opening more doors to greater victories in math, in school and in their everyday endeavors.  Mathnasium of Marina del Rey is excited to partner with parents, local schools and community to ensure students have strong educational support and rich opportunities to help them grow and enjoy greater academic performance.  Whatever your math needs are, from catching up, keeping up and to getting ahead in math, math test preparation to one-to-one tutoring Mathnasium of Marina del Rey, CA is poised to assist you.  Contact us today to find out more about how Mathnasium can make a positive difference in a child's life.

 Jeanette Randolph-Jackson, Center Director

Jeanette has a background in medical research, specializing in Oncology. She worked in this field for 15 years. As a mother to three young children, she knows the importance of education as a key part of success for students at any grade level. Soon after moving back to Los Angeles in 2014, Jeanette enrolled her children at the Mathnasium center in Cerritos. The Mathnasium Method blew her mind! After seeing the success of the program, she decided to team up with her husband Walter Jackson to open up a center here in Marina del Rey. She hopes to be an active member of the educational community and to make a positive impact on everyone who is in need. 


Diane Conrad,  Center Director

Diane's educational background includes classes in Childhood Development at UCLA, a B.A. and Multiple Subject CLAD Teaching Credential from Loyola Marymount University, a Master’s Degree in Education & Curriculum, and a Master’s Degree in Educational Administration from Grand Canyon University. For the last 20 years, she has worked in schools in the Los Angeles area as a teacher, Principal and Vice Principal. She’s taught grades K-8 in all subject areas. Math is her favorite subject to teach. She loves working with children, and Mathnasium offers the tools to help young learners improve critical math skills and understanding regardless of their current ability level. The curriculum is engaging and focuses on essential skills so students “get” the concepts with a progressive and fun approach to math literacy.


Sandy Urbano, Lead Instructor

Sandy is a recently retired National Board Certified high school math teacher from Fort Lauderdale, Florida. She taught the last 25 years at Plantation High School, where she served as the Mathematics Chair for 16 years. She and her husband have lived in Marina del Rey for the past year and a half. Sandy is excited to be able to work with students and help them better understand math by applying the Mathnasium Method.




Darius Koroni, Instructor

Darius is a current student of UCLA studying Computer Science and Linguistics. Based on his own experiences overcoming hurdles in mathematics, he hopes to extend his knowledge to others who are struggling with numbers. By developing core fundamentals as a base, Darius plans on giving every student a solid platform from which to continue their schooling in math. During his free time, Darius tries to develop and code applications and video games. 



 Mel Strom, Instructor

Mel devoted most of his adult life to teaching and researching natural language--Russian, Russian linguistics, literature, and history. But early on, while struggling with the early stages of dissertation research at UCLA, he spent a few years teaching math, physics, and computers at Brentwood School, here in Los Angeles. That itself was not so far out of character, however, as his first love, in school and university, was and still is physics. Now he finds himself returning to mathematics, the language of natural science, and he finds that he never really left it. The joy of doing mathematics with his grandchildren in recent years led him to getting the opportunity to do so at Mathnasium of Marina del Rey.


 Ryan Lee, Instructor

Ryan is a 2nd-year undergrad student at UC Irvine and graduated from Venic High School in 2017. He studies Economics, but has always enjoyed math since a younger age. Ryan, a former MDR Mathnasium student himself, is proud to be able to help others in math. 

Ryan loves anyting baseball related and is a big fan of rap music.



 Sydney Guillaume, Instructor

Sydney is a graduate of the University of Southern California, class of 2013. She has a passion for mathematics, having tutored for the Chaka Khan foundation at USC. She also was a substitute teacher for many schools across the Los Angeles area for a few years once she graduated college. She always loved working with children and helping them to understand math has always been a passion of hers. Her other passions include acting and singing, as she majored in Dramatic Arts at USC. She is very proud to have joined the Mathnasium team and hopes to make a difference in her time here.


Marina Coury, Instructor

Marina is going to be a senior at Culver City High School this fall. Although it didn't always use to be, Math is now her favorite subject to study. After attending a Math program similar to Mathnasium, she strengthened her skills and found a passion for Math. Now, she wants to help other students do the same. In her free time, Marina enjoys playing the piano and hanging out with her friends. 





Annie Coury, Instructor

Annie is  entering her senior year at Culver City High School. Outside of school,  Annie enjoys playing the piano and playing volleyball. She is currently a part of her school's CIF Championship volleyball team and looks forward to possibly winning another champianship this upcoming season. Math has been one of her biggest passions for as long as she can remember and she loves being able to                                                             share her passion with others here at Mathnasium.