Mathnasium 3520 Okemos Rd, #5, Okemos MI 48864 (517) 347-3200

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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:

DirectorJoel Tillman - Managing Director

Joel earned a Bachelor of Science in Mechanical Engineering from Purdue University, a Master of Arts in Teaching from Trinity International University and holds a secondary (6th-12th grade) math teaching certificate. Joel has taught in both traditional and alternative education classrooms around the greater Lansing area. He has a love for children and a love for mathematics. As a teacher and a father of five, Joel understands that kids learn in a variety of ways. This is why he is proud to be a part of Mathnasium where he is able to teach kids math in a way that makes sense to them.

Graham Goble - Center Director

Graham earned a Bachelor of Science in Mechanical Engineering from Michigan State University. He grew up in Okemos and is a member of the Okemos High School class of 2011. Graham was an instructor at Mathnasium of Okemos for about a year and a half prior to being promoted to Center Director. Before joining Mathnasium, Graham worked in various jobs around his community such as lifeguarding and carpentry. At MSU, Graham was involved in the MSU Drumline and traveled to Antarctica for a study abroad trip. He greatly enjoys math and wants to pass on that enjoyment to the students at Mathnasium.

Blake Ross - Instructor

Blake is currently working toward a Bachelor’s degree in Actuarial Science from Michigan State University.  Prior to joining the Mathnasium team, he worked as a tutor at MSU’s Math Learning Center helping student with Algebra through Calculus 4.  While helping college students learn math was rewarding for Blake, working with younger students at Mathnasium before math becomes a major stumbling block is exciting to him. Outside Mathnasium, Blake is a huge sports fan having played both football and lacrosse in his younger day. He is also an Eagle Scout from local Troop 180!

Ursula Glasmacher - Instructor

Ursula is currently attending Okemos High School. She has excelled in math and has completed math coursework beyond her peers. Prior to joining Mathnasium, she volunteered in local middle schools helping kids with their homework. Due to these experiences, Ursula is considering pursuing a career in education and is excited to be a part of the Mathnasium team were she can help students improve in math every day.

Aditya Venkata-Krishna - Instructor

Bio coming soon.


Chris Jones - Instructor

Bio coming soon.


Anvita Gollu - Instructor

Bio coming soon.


Irene Van Nocker - Instructor

Bio coming soon.


Jaana Glasmacher - Instructor

Bio coming soon.