Our staff is built to teach each student individually, to develop the skills they need to thrive in mathematics, and to foster a love of learning.

Tammie Yoakum

Owner

Tammie grew up in Glendale alongside her sister and co-owner, Betsy. Before joining Mathnasium full-time, she spent 30 years in the premium finance industry, building a strong career in business management and client support. 

Her favorite part of Mathnasium is seeing students experience “aha” moments and grow in confidence. Tammie loves being part of a positive, student-focused environment where math truly makes sense. Outside of work, she enjoys spending time with family and friends, as well as music, movies, reading, and traveling.

Maxwell Tewelis

Assistant Center Director

Maxwell is a graduate of Northern Arizona University with degrees in mathematics, chemistry, and criminology. He has always been fascinated by math’s versatility and the unique ways students approach problem-solving. 

He enjoys fostering a positive learning environment and helping students develop strong skills and confidence. Outside of Mathnasium, Maxwell enjoys caring for his younger brother, reading, watching movies, and spending time with friends.

Aliya Carrera

Assistant Center Director

Aliya is a Pinnacle High School graduate and has been part of the Mathnasium family for nearly six years. Her experience as both a student and team member has given her a deep appreciation for the Mathnasium Method™. 

She enjoys supporting students, whether they need extra help or want to get ahead. Aliya loves connecting with families and creating a welcoming atmosphere. In her free time, she enjoys listening to music, spending time with her sister and her cat, and learning new skills.

Mary Savidge

Assistant Center Director

Mary is a retired math teacher who brings a wealth of experience and passion for education to Mathnasium. She loves the logic of math and enjoys helping students understand concepts while building their confidence. 

As Assistant Center Director, Mary values Mathnasium’s supportive, engaging atmosphere, where learning is both fun and effective. She thrives on guiding students toward success and seeing their excitement when concepts click.

Noel Hester

Lead Instructor

Hello, I'm Noel. I have studied physics and math at ASU.  I have a deep passion for learning and helping students achieve their best! In my free time. I like to write music and meditate outside.

Monika Mattick

Lead Instructor - Online and Homeschool

Hi! I’m Monika Mattick. I have an Elementary Education degree (math emphasis) from GCU. I served for 5 years as a private math and language arts tutor in Southern California, then moved to Fountain Hills, Arizona in October 2023 with my husband, Adam. My greatest passion within education is not in the traditional classroom, but rather one-on-one tutoring. Especially math! Students have said I get way too excited for math time! My goal is to inspire your students to love math just as much! Having been homeschooled from 3rd grade through my senior year of highchool, I have a particularly deep passion for the homeschooled kids of Mathnasium. In my free time, I love to bake, do artsy projects, and spend time with family!

Rijul Gupta

Lead Instructor

Hello, my name is Rijul Gupta and I am a sophomore at Shadow Mountain High School. Ever since I was little, math has been my favorite subject and I look forward to it everyday. Before working at Mathnasium, I used to be a student here. In my free time, I play tennis and love to hangout with my family.

Anagha Vippagunta

Instructor

Hey there! My name's Anagha, and I'm a current freshman in the CREST Bioscience program at Paradise Valley High School. Math is THE universal truth - a language that everyone has the potential to speak and understand. Mathnasium combines my love of math and my passion for teaching, and it's truly amazing to watch the kids here become empowered individuals and proficient thinkers. I have been tutoring math since 5th grade, and I have been an instructor here at Mathnasium since I was in 7th grade. In my free time, I like listening to music and creative writing.

Srividya Srinivasan

Instructor

Hi, I'm Srividya, a 36-year-old based in Phoenix, Arizona. Outside of Math and being around kids, I enjoy music. I play an Indian instrument called Veena. My daughter and I play the instrument together at times. I have an engineering degree and used to work as a software developer in India.

Saya Amin

Instructor
Hey! My name is Saya and I am a student at Basis Phoenix. My first memories at Mathnasium were as a student. I have enjoyed learning math and sciences and I hope to share that with others in the center. I also enjoy playing piano in my free time.

Sahasra Karanam

Instructor

Hi! My name is Sahasra Karanam, and I am a sophomore at Paradise Valley High School CREST Bioscience. I have always been interested in math and it is one of my strongest subjects. I hope to help students explore math and become more confident in themselves. In my free time, I love to dance, play the guitar and bake.

Shyam Sathisan

Instructor

Hello! My name is Shyam Sathisan, and I am a current student at Paradise Valley High School in CREST Biology. My favorite branch of math is statistics for its ability to explain things in the real world, and I enjoy teaching at Mathnasium because I can share my knowledge and reinforce my own!

Penelope Wimsatt

Instructor

Hi! My name is Penelope Wimsatt and I am a freshman at Pinnacle High School. I have always enjoyed math and before I became an instructor I was a student here at Mathnasium! In my free time I enjoy playing volleyball and hanging out with my friends. 

Gunika Goyal

Instructor

Dylan Urias

Instructor

My name is Dylan and I am a graduate student studying Statistics at ASU.  I have always wanted to teach, so Mathnasium is a good fit for me.  Outside of school and work, I like playing bass guitar, volleyball, pickleball, working out and spending time with my family and friends. 

Hayden Gillette

Instructor

Hi! I'm Hayden. I was born in San Francisco and moved to the Phoenix area a little over a decade ago now. I'm pretty new on the Mathnasium crew, but I love my job and the opportunity to work with so many students to help them on their math journey. I love photography and mechanical engineering, and I have a dog named Buddy.

Rimsha Khan

Instructor

I'm Rimsha Khan.  I am a junior in high school taking advanced math.  I enjoy teaching kids math and I like math.  I like to spend time with my family and friends in my free time. 

Lucas Eastman

Instructor

I'm Lucas, a senior at Arizona State University studying Computer Science. I enjoy programming in my free time with my friends.  I love math because I enjoy finding patterns that make it easier to intuit the world around me. 

Divya Shah

Instructor

Hi, my name is Divya and I am a senior at Paradise Vally High School.  I love math and being around kids.  In my free time I love to read and sketch. 

Brenna Dugan

Instructor

Hi! My name is Brenna and I am currently a senior and Sunrise Mountain High School and attend the MET Professional Academy.  I love math because it feels like a puzzle.  I love working at Mathnasium because it gives me the opportunity to show other students that everyone is capable of succeeding in math. In my free time I love going to the gym, taking naps, playing with my pets, and hanging out with friends and family.  I also volunteer every weekend that I can.

Kanisha Tentu

Instructor

Hi! I’m Kanisha. I am currently a high school student at BASIS Scottsdale. I’ve always loved math ever since I was little, especially because it explains why things happen. Through Mathnasium, I hope to share this passion I have for math with the younger generation. I also enjoy learning about chemistry and biology. In my free time, I play tennis, swim, or hang out with my loved ones

Ben DeMeo

Instruction

Hi! My name is Ben and I am a freshman at Pinnacle High School. l enjoy math because it’s logical, there is always a right answer. I also enjoy playing the cello, traveling to new places, and hanging out with my two cats. I’m excited to work at Mathnasium because I want to help others have fun while growing their math skills.

Rima Bala

Instructor

Hello, my name is Rima! I am a junior at Paradise Valley High School, and I have always loved math. I hope to instill the same sense of joy that I feel from finally understanding a new problem into every student that I get the opportunity to teach!  Some of my hobbies include crocheting stuffed animals and sketching 

Ishita Deshmukh

Instructor

Hi, my name is Ishita and I'm a student at Basis Phoenix.  I enjoy exploring different areas of math, especially statistics and calculus.  I'm really excited to help students build confidence at Mathnasium!  In my free time, I like watching sitcoms, listening to music and helping my little brother with his homework.

Rushitha Kudipudi

Instructor

Hi, my name is Rushitha and I am a high school student at Basis Phoenix.  I have always enjoyed math because I like solving problems and figuring out how things work, step by step.  At Mathnasium, I hope I can help students enjoy math as much as I do.  In my free time, I enjoy hanging out with my friends, swimming and drawing. 

Ratna Veluri

Instructor

Our Mathnasium Mission

Teach children math so they understand it, master it, and love it. Math can change their lives, and they can change the world.

Quote Quote
What I love about Mathnasium is the ability to teach problem-solving skills and make math make sense, while also making a student smile.
Amber W., Mathnasium Instructor

Schedule Your Math Skills Assessment Today

Student using math cubes to solve fractions
Student working with a math tutor at a local math learning center

Want to join the Mathnasium team?

Are you interested in changing lives through math? We're looking for outstanding individuals with a high level of commitment who are passionate about teaching math. Find out if there's a Mathnasium position that's just right for you!

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