C. Brady
I just love Mathnasium! I love that the kids play games while learning math! I love the positivity and upbea...
See more reviews here




C. Brady
I just love Mathnasium! I love that the kids play games while learning math! I love the positivity and upbea...
See more reviews here
Mathnasium of Centennial's personalized geometry tutoring programs are designed to support students at every stage of their math journey.
Students explore foundational topics and ideas such as angles, geometric figures, congruence, and measurement while improving spatial reasoning and logical thinking to prepare for more advanced geometry courses.
Following personalized learning plans, we guide students through high-school-level topics such as proofs, triangles, circles, transformations, and the Pythagorean theorem, using personalized learning plans to break complex ideas into clear steps that truly make sense.
Honors students and those preparing for math competitions can dive into advanced proofs, coordinate geometry, and complex strategies, sharpening analytical skills and preparing for college-level mathematics and competitive challenges.
Our specially trained math tutors support students of all skill levels excel in geometry, whether just starting out with basic geometric elements like lines and angles, or working through complex proofs and coordinate geometry.
We provide personalized, face-to-face instruction in a nurturing and fun environment, guiding students step by step through the concepts they need to master and building their confidence in the subject.
We teach geometry using the Mathnasium Method™, a proprietary and effective teaching approach designed to promote math mastery, including a deep understanding of geometry.
By combining personalized learning plans with interactive teaching techniques, we help students not only grasp essential geometry concepts but also enjoy the learning process.
Every student begins with a diagnostic assessment where we identify their current skill, find any gaps in understanding, and determine their learning goals. Using these insights, we create a personalized learning plan that puts them on the best path to geometry mastery.
Our tutors follow each student’s personalized learning plan and use proven, interactive techniques to help them develop a deep understanding of geometry. This approach empowers students to master key concepts like transformations, similarity, congruence, and more.
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.
Geometry Tutors Near You
We specialize in math-only instruction with a customized and fun learning approach that delivers results. We proudly serve families in Centennial communities and schools, including:
Specially Trained and Caring Team
Maddie Sackett
Center Director
I have taken upper level math classes in college most focused on statistics and business analysis as I complete my Accounting Degree. I love to be active outside and involved in the community! On my free time you can find me hiking, fishing, rafting, enjoying live music, or trying a new restaurant!
Fun Fact: It is a goal of mine to visit very national park in America.
Favorite Number, Why?: 11 it has always been my mom's favorite number so growing up I used to as my sports number.
Education: I graduated from Chatfield Senior High School in 2020 and I will be graduating from Metropolitain State University in December 2025.
Why I Like Mathnasium: I love to watch kids grow a passion for math! The "ah-ha" moment is so cool to witness!!
Kassidy Shumway
Director of Operations / Co-Owner
Kassidy Shumway grew up in Bountiful, Utah, and graduated from Brigham Young University in 2011. While at BYU, Kassidy earned a Bachelor's of Science degree in Civil Engineering, was a TA in the math department, and also found time to be an All-American and a team captain and member of the BYU Women's Soccer Team. Kassidy has many years of experience coaching children of all ages in soccer. She has been helping students at Mathnasium since January 2013. Kassidy and her husband have two kids and two active dogs.
Fun Fact: I was in a video on YouTube with over 6 million views.
Education: Bachelor of Science in Civil and Environmental Engineering from BYU
Why I love Mathnasium: I love helping kids realize that math can be fun. My favorite part of my job is going into elementary schools and putting on Math Nights. Laughing and having fun with kids while we do math is so rewarding!
Clint Brown
CEO / Owner
Clint Brown spent the first 16+ years of his career working in marketing and advertising. From the small software start up to the $100M advertising agency, Clint has helped companies of various sizes grow and succeed. Clint has been involved with Mathnasium for several years and loves the rewarding experience of helping kids of all ages build math confidence.
Clint currently resides in Utah with his wife and 3 kids. Clint loves being in the outdoors hiking, canyoneering, skiing and more. He enjoys watching college football and cheering on the football team from the University of Utah.
Fun Fact: Clint summited Mount Kilimanjaro in Tanzania, Africa. Which reaches an elevation of 19,341'.
Education: Clint holds a B.S. in Electrical Engineering from the College of Engineering at the University of Utah.
Why I love Mathnasium: Helping kids realize that they can do math is one of the most rewarding things I've had the opportunity to experience in my career. Seeing a student gain confidence in their ability to do math can be life changing and working at Mathnasium allows me to see that happen every day.
Reed Brown
Owner
Reed has always loved math and enjoys helping kids learn to love math and how to use math in their daily lives. Reed earned a BS of Electrical Engineering degree from Brigham Young University and a Masters of Business Administration degree at Boise State University. Reed has spent over 25 years as a successful engineering and operations executive at Hewlett Packard, Quantum, and Iomega. In 2004, he decided to test his entrepreneurial skills and created Matchbin (now Radiate Media), a successful internet software company. Over the last 10 years, Reed has been active in the Utah technology community. As a member of the Governor's Technology Initiative Advisory Board for the State of Utah, he has helped to grow funding for engineering programs at Utah Universities and Colleges. Reed and his team is committed to helping children grow their interest and confidence in math and prepare them for a successful college education and career in technology, business, finance, medical, manufacturing, science, biology, or other fields that require strong math skills.
Fun Fact: I decided to become an Electrical Engineer because of 8th-grade shop project making a DC motor
Education: Bachelor of Science degree in Electrical Engineering from BYU and Masters of Business Administration degree from Boise State University
Brenna May
Instructor
Brenna is a junior at the University of Denver studying Emergent Digital Practices with a minor in French. A former AP Calculus BC and AP Statistics student, she’s made the Dean’s List and led the Tri-M Music Honor Society.
Outside of Mathnasium, Brenna enjoys video games, cooking, and was a competitive Irish dancer for nearly 10 years. Her favorite number is 10, the base of our number system and her birthday.
Kaden Wilson
Instructor
I've taken Calculus1-4, Probability, Algebra 1&2, and Pre Calculus. I've worked as a math tutor during my entire time at college. I enjoy playing video games and going on occasional walks through the neighborhood, as well as reading.
Fun Fact: I've known how to whistle since I was a little kid.
Favorite Number, Why?: 7, because it is always associated with luck.
Education: I went to Colorado State University Pueblo, Where I recently Graduated With a Bachelor's of Science in Engineering, along with a Minor in Mathematics. My Major Was Mechatronics Engineering.
Why I Like Mathnasium: I enjoy helping people, and any opportunity to do so is enjoyable for me.
Matthew Wheelis
Instructor
I have taken College Algebra, Trigonometry, Precalculus, Calculus 1, Calculus 2, and Calculus 3 (currently taking). I often help my siblings as well as classmates study and learn complex math that they may be struggling with. I enjoy playing guitar and piano, stargazing with my telescope, and reading physics books.
Fun Fact: I am completely self taught in guitar and piano. No one else in my family can play any instruments.
Favorite Number, Why?: My favorite number is actually π because it is an irrational number and a constant. I find it interesting that π goes on infinitely and never repeats itself as well as being used in almost every aspect of nature.
Education: I go to school at Arapahoe Community College and am working through my third year. I am a Chemistry major and I plan to receive my transfer degree in spring of 2026. After I transfer, my goal is to finish my Bachelor’s Degree in Chemistry and start working towards a PhD in Astrophysics at CU Boulder.
Why I like Mathnasium: I enjoy helping others learn math and find a sense of passion in it. I also believe that in return of helping others learn, it may grant me a larger perspective on the topic. I am a very logic minded individual and I believe that helping others learn about the subjects I’m passionate about will bring me some happiness and satisfaction.
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 geometry concepts they still need to learn.
FAQ
Mathnasium of Centennial is located on Briarwood Ave, on the corner of Arapahoe and Lima, in a small, family-friendly shopping center with gyms, salons, and restaurants, making it a convenient stop for families.
Students can attend sessions in person or join live, face-to-face online geometry tutoring with our caring tutors in Centennial.
We proudly serve students from Centennial, Littleton, Cherry Creek, and Aurora.
Yes! We support students in both middle and high school, including those enrolled in standard, honors, or advanced geometry courses.
Whether a student is just beginning to explore shapes and angles or working through advanced proofs and coordinate geometry, our tutors at Mathnasium of Centennial can help. Topics we cover include:
Angles, triangles, and plane figures
Circles and polygons
Congruence, similarity, and geometric relationships
Transformations: reflections, rotations, translations, and dilations
Coordinate geometry: distance, midpoint, and slope
Volume and surface area of 3D shapes
Logical reasoning and proof writing
All instruction is guided by a personalized learning plan built around each student's needs and goals.
At Mathnasium of Centennial, we focus on building true understanding and solid foundations for long-term math mastery.
To do so, we use the Mathnasium Method™, a proprietary teaching approach designed to help students understand and even enjoy math. Every student starts with a diagnostic assessment to identify their current skill level, knowledge gaps, and goals.
Using those insights, we build a personalized learning plan and provide face-to-face instruction, either in-center or online, in a caring and fun group environment. Our tutors use a combination of visual, verbal, written, tactile, and mental strategies to make geometry clear and engaging for every learner.
When working with students who are struggling with geometry, our goal is to transform how they think and feel about the subject by building both their skills and confidence. We expand on what students already know, break down complex concepts into manageable steps, and guide them forward at a pace that works for them.
Geometry also shows up in more places than students expect, from the angles in a football throw to the measurements on a playing field, and helping students see those connections often makes the concepts click in a new way.
Absolutely! For advanced students, we offer enrichment opportunities that include challenging proofs, multi-step problem solving, and real-world applications to deepen their geometric thinking.
Yes. Each session includes time for homework support. Our tutors focus on helping students understand the material, not just complete assignments, so they can solve similar problems independently.
Yes! We can align our geometry instruction with classroom goals or Colorado state standards to help students prepare for quizzes, unit tests, final exams, and state assessments like the CMAS. We also support students preparing for standardized tests like the SAT®.
Yes! Students can join live, face-to-face online sessions with our tutors in Centennial, following the same personalized learning plan and receiving the same caring, real-time instruction as those attending in-center.
Mathnasium of Centennial is dedicated exclusively to math.
We use the Mathnasium Method™, a proprietary teaching approach that begins with a diagnostic assessment and results in a personalized learning plan designed around each student's needs.
Our specially trained tutors teach geometry in a way that makes sense to each student, building both understanding and confidence in a supportive, engaging environment.
Yes! Our tutors are familiar with Colorado math standards and the geometry expectations of local schools.
When appropriate, we can align personalized learning plans with state standards and classroom goals to support classroom performance.
The cost of math tutoring at Mathnasium of Centennial depends on your student's individual learning plan and session schedule. Students usually attend a couple of sessions per week for a flat monthly membership fee.
For specific pricing information, please contact our center directly. We're happy to walk you through the options and find a plan that fits your student's goals and your family's needs.
The first step is scheduling your child's free assessment at Mathnasium of Centennial. The assessment helps us understand their current geometry skills and goals so we can design a personalized learning plan that fits their needs.
Most students are ready to begin regular sessions within a few days.
Schedule a risk-free assessment for your child, today! Give your child an edge this school year w...
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11435 E. Briarwood, #500
Centennial, CO 80112
| Call: | (303) 995-3826 |
| Text: | (720) 638-1834 |
| Email: | [email protected] |
Mon-Thu
3:00PM-7:00PM
Fri-Sat
CLOSED
Sun
3:00PM-6:00PM
Mon-Thu
10:00AM-8:00PM
Sun
3:00PM-6:00PM
| Mon-Thu: | 3:00PM-7:00PM |
| Fri-Sat: | CLOSED |
| Sun: | 3:00PM-6:00PM |
| Mon-Thu: | 10:00AM-8:00PM |
| Sun: | 3:00PM-6:00PM |
Have questions? Contact us.