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.

Laney Stong

Lead Instructor

Laney is a senior at the University of Texas at Austin, where she is studying neuroscience. She has lived in the area her entire life and enjoys giving back to the community by helping students grow more confident in math. Her 12 years as a Girl Scout taught her patience, perseverance, and teamwork, qualities she brings to each lesson. 

Laney loves creating a supportive environment where learning feels rewarding. Her favorite math joke is, “Are monsters good at math? Not unless you Count Dracula!” She enjoys seeing students discover that same spark of confidence in themselves.

Joseph Goffar

Instructor

Joseph is pursuing a degree in mechanical engineering at the University of Texas at San Antonio. Originally from Honolulu, he now calls Texas home. Outside of work and school, he enjoys video games, 3D printing, and Star Trek. He has a great sense of humor and brings enthusiasm to everything he does. 

Joseph enjoys helping students find clarity and confidence in math. He jokes that while he is tall, he is terrible at basketball, but he always gives his best effort. He hopes to one day work as a design engineer while continuing to share his love of problem solving.

Mack Tully

Instructor

Mack is a graduate of the University of Texas at San Antonio with a degree in computer science. A Texas native, he is passionate about cybersecurity and hopes to one day work in government service. He has traveled widely and brings curiosity and perspective to his teaching. 

Mack has been a black belt in karate since the age of four and applies the same focus and determination to his work at Mathnasium. His favorite math joke is, “Why did the obtuse angle go to the beach? Because it was over 90 degrees.”

Rolando Urbina

Instructor

Rolando is a sophomore at the University of Texas at San Antonio. He lived in Chicago before moving to Texas in 2022. He wants to attend UTSA to major in Architecture or Engineering. He enjoys running, biking, and being outdoors.

Favorite Number: 11

Fun Fact:

I run track and cross country.

Favorite Math Joke:

I have a scary math joke to tell, but I’m “2²” to tell it!

In five years, I will:

receive my Bachelor’s from College.

I love Mathnasium because:

It is a fun environment for kids to learn, and I wished I had access to Mathnasium as a kid.

Mia Stong

Instructor

Mia is a senior at Samuel Clemens High School. She has lived in Texas her whole life. She wants to go to the University of Texas at Austin to major in Biology. She enjoys reading, painting, and spending time around friends.

Favorite Number: 17 

 Fun Fact:

 I have a sister and niece who live in Florida!

 Favorite Math Joke: 

What shape do you always have to be careful of? A trap-azoid! 

In five years:  I will be a student in college. 

I love Mathnasium because:

math is my favorite subject, and I love being able to help others!

Amy Sachs

Instructor

Amy is a retired high school math teacher with 28 years of experience, teaching in San Antonio ISD, Alamo Heights ISD and Northside ISD. She was born and raised in San Antonio, and is looking forward to helping kids find the excitement in mathematics!

Favorite Number: 3

Fun Fact: 

I enjoy traveling to new places! 

Favorite Math Joke: 

What’s a birds favorite type of math? Owl-gebra! 

In five years, I will: have received my certification in Education for Ministry from the University of the South 

I love Mathnasium because: providing students the opportunity to engage in mathematics in a fun manner while improving their skills is a must!

Antonio Duran-Stanton

Instructor

Antonio is a senior at Randolph High School. He’s a military kid and has moved around a lot. He’s lived in Texas for 5 years. He’s hoping to study chemical engineering or physics in college. 

Favorite Number: e (Euler’s number) 

Fun Fact: I lived in Germany! 

Favorite Math Joke: Why are derivatives so distracted? They’re always on tangents! 

In five years, I will:  Be graduated from college and hopefully in graduate school!

I love Mathnasium because: I love math and teaching it is the best way to understand even more!



Chris Duchaussee

Instructor

Chris is a passionate instructor who is studying computer science online through WGU, before that he was living in similarly sunny Jacksonville Florida enjoying the beach.

Favorite Number: 25

Fun Fact: I played every sport I could in school from wrestling to cheering!

Favorite Math Joke:  What made the triangle blush? They said his angle was a-cute! 

In five years, I will:  Graduate from college and pursue a career  

I love Mathnasium because: Learning and watching others learn is a fulfilling and wonderful process, which can happen every day if we work hard enough.

Felipe Urritia

Instructor

Felipe is a student at post graduate Masters student from Texas A&M University-Corpus Christi, and born and raised in San Antonio

Favorite Number: 25

Fun Fact: I have lots of French bulldogs, I like to paint, and I am a scientist.

Favorite Math Joke: Why was 6 scared of 7? Because 7 ate 9.

In five years, I will: Be an instructor in biology in a community college.

I love Mathnasium because: Giving students the confidence to do math is rewarding and gives me great joy!

Iván Danes

Lead Instructor

Iván is an international Physics student who is currently working on his thesis in order to graduate from college. Even though his degree is not education orientated, he would like to become a full time teacher some day. 

Favorite Number: e

Fun Fact: I did archery for more than 8 years 

Favorite Math Joke: Who invented the round table? Sir Cumference 

In five years, I will:  Obtain my PhD

I love Mathnasium because: I can contribute (positively) in reducing the growing mathfobia among the newest generations and the ones to come. 

Ayesha Spanfelner

Instructor

Ayesha is an alum of St. Edward’s University, where she studied math, and she has a PhD in computational bio-physics from Case Western Reserve University. She spends her free time reading, writing her Dungeons & Dragons campaign, and dabbling in Data Science.

Favorite Number: 2

Fun Fact: I have a dog and a cat. They are frenemies!

Favorite Math Joke: How do you make 7 even? Remove the S!

In five years, I will: Be developing software to solve the toughest problems in statistical physics.

I love Mathnasium because: Math is my favorite subject, and I love sharing that excitement with young learners!

Marisol Rosado

Instructor

Marisol is a Senior at Samuel Clemens High School.

Favorite Number: 127

Fun Fact: I can play various instruments.

Favorite Math Joke: Why was 6 afraid of 7? Because 7 ate 9

In five years, I will: Live abroad and know at least 4 languages

I love Mathnasium because: I get to do math and help people at the same time

Ted Slauson

Instructor

Ted was a middle and high school mathematics teacher for 13 years and has worked in mathematics assessment since 2002. Ted grew up and taught in California and relocated to Texas in 2005. Ted enjoys spending his free time pampering and snuggling with his three cats and getting fresh air and exercise by walking.

Favorite Number: 28

Fun Fact: Ted has an enormous collection of memorabilia from the Peanuts comic strip.

Favorite Math Joke: What did the acorn say when he grew up? Geometry

In five years, I will: be counting the days until retirement.  

I love Mathnasium because: the Mathnasium methods and curriculum help students learn mathematics in ways they may never have been exposed to and in ways that help them perform mathematical operations mentally and more efficiently.

Vincent Miller

Instructor

Vincent is a sophomore at Northeast Lakeview pursuing a degree in mechanical engineering. Vincent enjoys spending his free time bowling and playing video games. He enjoys astronomy and physics. Vincent was Oklahoma born and Texas raised.

Favorite Number: 2

Fun Fact: I can play clarinet, saxophone, and piano.


Favorite Math Joke: Not all math jokes are bad. Just SUM

In five years, I will:  Hopefully transfer to UTSA and graduate with my degree in mechanical engineering to get into aerospace to build aircraft and rockets.

I love Mathnasium because: I enjoy engaging with the kids and teaching math. I think the satisfaction of seeing the tutoring pay off is really rewarding. 

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

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

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