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Drawing of me created by Deb, one of my friends.
Drawing of me created by Deb, one of my friends. (The sliders in the banner are interactive!)
Hello! I’m Eldrick Chen, also known as calculus gaming. I love making educational websites (especially ones related to math), so here are some I’ve made throughout the years!
All pages are completely free and do not contain ads.
(the “unnamed website” series)
These are my flagship pages featuring interactive tools and easy to understand explanations.
When I started working on my calculus website, I couldn’t think of a name for it, so I used “unnamed calc website” as a placeholder name. In the months following that, I still couldn’t think of a name, so it remained as unnamed calc website.
When I started my multivariable calculus website, instead of spending lots of time trying to think of a name, I decided to just continue with the “unnamed ____ website” naming scheme. That’s also what I plan to do with any future websites of this type!
For Calculus I and II (Differential and Integral Calculus)
Project started: 2023-05 (May 2023)
Last updated: 2025-05-12
Link: calculusgaming.com/calc
For Calculus III (Multivariable Calculus)
Project started: 2025-01 (January 2025)
Last updated: 2025-05-16
For Linear Algebra
This page is a work in progress! (Progress: 5/37 lessons done)
Project started: 2025-05 (May 2025)
Last updated: 2025-05-17
These are educational pages about computer science concepts.
Fast Inverse Square Root Algorithm Breakdown
Project started: 2023-02 (February 2023)
Floating-Point Numbers Explained
This page is a work in progress!
Project started: 2025-05 (May 2025)
(the “surviving” series)
These are less polished notes for the math classes I have taken (or am taking) at the University of Texas at Dallas.
The name “surviving calculus” comes from my friend Deb who originally started the website. I decided to stick with this naming scheme for the sequel “surviving calculus 2”. I don’t see any reason to change this naming scheme, so expect “surviving linear algebra” to come out next semester!
For the Calculus I Honors class
(Fall 2024, MATH 2417.HN1)
Project started: 2024-10 (October 2024)
Short link: calculusgaming.com/surviving
For the Calculus II Honors class
(Spring 2025, MATH 2419.HN1)
Project started: 2025-01 (January 2025)
Short link: calculusgaming.com/surviving2
These are presentations that I’ve created about complex math concepts. These include interactive graphs and tools to visualize concepts.
Project started: 2024-01 (January 2024)
Presented on 2024-02-06
Riemann Integration Presentation
Project started: 2025-01 (January 2025)
Presented on 2025-02-11
These are some of my other projects that may or may not be educational websites.
chaddypratt.org: The Home of Free Charity Programs
Project started: 2019-06 (June 2019)
Project started: Mid-2020
Project started: 2025-01 (January 2025)