I loved GeoCities back in Japan in the 1990s, so was thrilled to discover NeoCities. I’m using this site mostly for educational tools and JavaScript experiments that I make for my schools and classes, and for other teachers and students.
Everything here is free to use. Please don’t hesitate to email me at chris@chrisspackman.com with bug reports, suggestions for improvements, or requests for other teacher-tool pages.
2026-10-10: New: the Timeline Maker. Build a timeline right on the page from events, section headings, and notes, then show it top to bottom or left to right, full screen on the projector, or print it or save it as a PDF. Events can have pictures, with a description for screen readers and a line for the picture’s source. Choose from twelve color themes, all checked for readable contrast. Add more details and vocabulary words to any event, and in View, click an event to open it in a larger box, then step through the events one at a time. Students can save their timeline to a file to hand in as homework, and you can open it to show the class. For group work, give every group the same starter timeline; when they send their files back, Add from a file brings all their boxes together on one timeline, and you can choose whether to show which group added each one. Everything stays on your computer. Two examples are ready to load: the history of the internet, and a tour of the Solar System that starts at the Sun and travels outward, with pictures of the planets, moons, and asteroids.
2026-10-10: Copious minor updates, corrections, and the such on many files. No big feature changes, though.
2026-10-06: Updated the Bingo Generator to version 0.3.0. Type any number of sheets from 1 to 200, or fill the word list in two clicks with a ready-made set: numbers, number words, the alphabet, hiragana, katakana, months, colors, or shapes. (Remember to press either Replace list or Add to list.)
Browser-based tools for teachers and students — especially for reading, phonics, and English Learner support. They run entirely in your browser, with nothing to install.
Tools for making classroom materials — and web pages — easier for everyone to read and use.
Interactive demos that explain how ciphers work — and how they get broken — from pen-and-paper classics to the math behind modern key exchange.
Point-and-click helpers for some powerful but fiddly tools.
fortune program.
v1.0 · updated 2026-08-08
neojongg
A mahjongg solitaire
game. Every board is guaranteed solvable, and
the Daily game is the same for everyone.
v1.3.0 · updated 2026-07-28
Solar Expats: Beyond
The Cradle
Settle the solar
system: colonize planets, trade, and out-build
six rival factions.
v1.24.0 · updated 2026-10-04
Mandated Reporter: My Conversations with Nnedi, a short story set in the near future, dealing with GenAI agents in education.
Disclaimer: these pages are educational demos provided as-is, with no warranty of any kind. The author is not responsible for any consequences arising from their use.
Send comments and bug reports to chris@chrisspackman.com.
Last updated: 2026-10-10
This page is Copyright © 2024 – 2026 Chris Spackman.
This web site developed entirely on GNU/Linux.
This work is licensed under a
Creative Commons
Attribution-ShareAlike 4.0 International License.