Classroom tools from a math teacher, built to bridge abstract mathematics and student intuition.
rāSHio, drawing a histogram live in the browser.
Each one started as a real problem in a real room: a stats class, a CS lab, a weld shop. Most open in the browser with no account and nothing to install.
A statistics calculator for the intro course, built to replace the StatCrunch and TI-84 shuffle. A spreadsheet up front, then t-tests, ANOVA, chi-square and probability shading, and every chart redraws as the data changes. The data never leaves the student's machine.
Given: browser, D3, Cloudflare D1 Open it →
Open textbooks, rewritten for the student who actually reads them: plain-English explanations, worked examples, collapsible solutions. An 11‑step pipeline produces every page.
Given: 180+ sections, MathJax Open it →
Question banks in, printed tests out. Old PDFs, scans, screenshots and Word docs become clean exams with shuffled versions and an answer key.
Given: Rust, egui, WebAssembly Open it →SourceA JavaScript classroom platform. Lessons, an in-browser editor with live autograding, join codes and per-student progress for the teacher.
Given: Next.js, CodeMirror, D1 Open it →SourceA living syllabus that parents initial section by section, so a signature means they read the late-work policy.
Given: vanilla JS, no build Open it →SourceA 2D game engine for beginners: sprites and real Box2D physics in a handful of globals. Write setup() and draw(), and the engine runs them.
Given: planck.js, zero imports Open it →SourceTracing paper over a coordinate grid. Plot a figure, lay the paper down, then slide it, turn it about a center you pick, or flip it over a mirror line.
Given: vanilla JS, no dependencies Open it →SourceAlleviate the tension between students and teachers. A forward-only set of math and reasoning problems that shows whether a student can’t start, won’t start, or doesn’t know enough yet.
Given: HTML, CSS, JS · no server Open it →SourceAn equation editor in pure Rust. Type it naturally, then copy it out as LaTeX, MathML, Word's OMML or SVG.
Given: Rust, wasm, WebGL2 Open it →SourceDocuments, spreadsheets, slides and PDFs as tabs in one window. Opens .docx, .xlsx and .pptx, with equaSHion and verSHion built in. Every app is written in Rust.
Given: Rust, egui, wgpu Open it →SourcePlant ID that runs on your own server or right in the browser. Seven real models get compared head to head, and the README says plainly that 16 photos are a smoke test.
Given: FastAPI, BioCLIP, Docker Open it →SourceWeld settings for the machine in front of you. Pick the process, metal and thickness, and it turns the chart's targets into the number you actually dial in.
Given: React, Vite, D1 Open it →SourceGrades welds, not people. Upload a photo or a short clip, describe the joint and position, and get a written report back from a vision model.
Given: Qwen3-VL, Ollama Open it →SourceSource on GitHub, ready to clone. Several open straight from a single HTML file. Each name opens its repository.
Grades 30 written responses in minutes on a local model. No cloud.
Handwriting OCR for stacks of student pages, on a local vision server.
Scans worksheets on a ScanSnap iX500 into searchable PDFs. AI fixes wait for your OK.
Turns a syllabus into one page a student reads in ninety seconds.
Plain-words CAD on its own Rust B-rep kernel. It refuses what it can’t build.
Turns STL and 3MF meshes back into STEP solids with true geometry.
A motion-forward home screen and photo screensaver for Roku TV.
The agent framework behind this page. It edits itself after each session.
Steven Huff
Math educator, CS teacher and curriculum developer. Ten-plus years teaching, from elementary through college.
One teacher. One left hand.
Read the full CV →Because I’m left-handed. Lefties drag their hand through wet ink, so every line gets checked twice. The smudge is a feature.
They're the initials. rāSHio, bookSHelf, verSHion: the tools sign their own names.
A student should open the page, get the answer, and get back to the homework. Student data stays on the student's machine wherever possible.