calculus gaming’s notes

Drawing of me created by Deb, one of my friends. (The sliders in the banner are interactive!)

Welcome to calculusgaming.com!

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!

Main mathematics pages

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!

unnamed calc website

Includes over 100 lessons covering most content you would typically find in a Calculus I or II class.

Project start date: May 2023

Last updated: March 3, 2025

Short links: chaddypratt.org/calculus, calculusgaming.com/calc

unnamed multivar website

This is a work in progress! (Progress: 16/37 lessons done)

The continuation of unnamed calc website, but with multivariable calculus (also known as Calculus III).

Project start date: January 2025

Last updated: March 24, 2025

Short links: chaddypratt.org/multivar, calculusgaming.com/mv

unnamed lin alg website (planned)

My plan after multivariable calculus is to create a linear algebra website!
I’m planning to learn linear algebra over the summer of 2025 to prepare myself for the linear algebra class I’m taking in the fall semester.

Pages for my math classes at UT Dallas

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!

surviving calculus

For the Calculus I Honors class (Fall 2024, MATH 2417.HN1)
I worked on this with Deb (the same person who helped me with the banner art!)

Project start date: October 2024

Short link: calculusgaming.com/surviving

surviving calculus 2

This is a work in progress!

For the Calculus II Honors class (Spring 2025, MATH 2419.HN1)

Project start date: January 2025

Short link: calculusgaming.com/surviving2

Presentations

These are presentations that I’ve created about complex math concepts. These include interactive graphs and tools to visualize concepts.

Euler’s Formula Presentation

A presentation about Euler’s formula (a famous formula that involves complex number exponents) that I presented at my high school’s math club.

Project start date: January 2024

Presented on February 6, 2024

Riemann Integration Presentation

A presentation about Darboux integration (a rigorous way to define definite integrals using Riemann sums) that I presented to some of my college friends.

Project start date: January 2025

Presented on February 11, 2025

Other educational pages

Aesthetic Apuntes

Notes from my 8th grade Spanish class. This is the first educational website I made!

Project start date: Mid-2020

Fast Inverse Square Root Algorithm Breakdown

An interactive explanation of Fast Inverse Square Root, a creative algorithm that was used in old video games to calculate the reciprocal of the square root of a number very quickly.

Project start date: February 2023

unnamed math 2417 website

A collection of notes for the Calculus I Honors class (Fall 2024, MATH 2417.HN1) at the University of Texas at Dallas (although it doesn’t have as much content as “surviving calculus”). Also includes a grade calculator for that class.

Project start date: August 2024

Other pages

These are some of my other projects that I would not consider educational websites.

chaddypratt.org: The Home of Free Charity Programs

A place where I showcase programs and apps that allow you to raise money for charity for free.
This is what I originally registered the chaddypratt.org domain for.
I no longer actively maintain the charity part of this website, but I still use the domain for my educational websites.

Project start date: June 2019

WhatsApp Message Browser

A website that analyzes WhatsApp chat logs. Features advanced search tools and message statistics.

Project start date: January 2025