OpenCurve
Math, meant to be seen. Every subject from Pre-Algebra to Topology, drawn as a glowing 2D or 3D visual.
Live site: https://xuunh.github.io/OpenCurve/
What it is
OpenCurve is a place to look at math before you study it. It is not a textbook, and it doesn't try to teach everything. Each subject gets a 2D or 3D visual drawn from real equations, so you can see the shape of an idea (how a curve behaves, what a limit approaches, how a surface bends) before the formulas.
It's made for students, tutors, and teachers, and it's built to run on laptops, Chromebooks, and classroom projectors.
How to use it
- Scroll (or Space, Page Down, the arrow keys, or the ↑ ↓ buttons) to move one subject at a time
- Move your mouse to tilt the view
- Index at the top of the screen jumps to any subject
Subjects
| # | Subject | Model | Status |
|---|
| 01 | Pre-Algebra | The number line, wound into a spiral | Planned |
| 02 | Algebra 1 | Hyperboloid x² + z² − y²/14 = c | In progress |
| 03 | Geometry | Geodesic sphere | Planned |
| 04 | Algebra 2 | The parabola y = x², spun into a dish | In progress |
| 05 | Trigonometry | Sine wrapped on a circle, y = sin 5θ | Planned |
| 06 | Pre-Calculus | Ripple z = cos(r) / r | In progress |
| 07 | Statistics | Bivariate normal distribution | Planned |
| 08 | Probability | Branching random walks | Planned |
| 09 | Calculus 1 | Tangent lines of y = x², swept into a surface | Planned |
| 10 | Calculus 2 | Double cone x² + z² = y² | Planned |
| 11 | Linear Algebra | Planes under a shear | Planned |
| 12 | Calculus 3 | z = sin x · cos y | Planned |
| 13 | Differential Equations | Lorenz system | Planned |
| 14 | Discrete Math | Sierpinski pyramid | Planned |
| 15 | Number Theory | Times tables on a clock, n → kn (mod 120) | Planned |
| 16 | Real Analysis | A sequence converging to its limit | Planned |
| 17 | Abstract Algebra | Symmetry group of the hexagon | Planned |
| 18 | Complex Analysis | Conformal map w = z² | Planned |
| 19 | Topology | Möbius strip | Planned |
The cover model is the torus knot (2, 3). Topics inside each subject are being added one at a time, starting with Algebra 1, Algebra 2, and Pre-Calculus.
Slides
A short overview deck for proposals, presentations, or sharing. Free to use with credit.
Run it locally
The site is four plain files with no build step: index.html (page structure), style.css (styling), loader.js (the loading screen), and main.js (the 2D and 3D visuals). Open index.html in a browser, or serve the folder:
python3 -m http.server
Then go to http://localhost:8000.
Built with
Contributing
Found a math mistake, want a topic, or want to help build? See CONTRIBUTING.md, or open an issue.
Credits
Made by Junayed Haider (@xuunh), Biomedical Engineering student at The City College of New York, with help from Claude Code. Fonts, libraries, and tools are credited under Built with.
License
MIT. See LICENSE.
