Chris Spackman's NeoCities Page

Welcome to Chris Spackman's NeoCities page

I loved GeoCities back in Japan in the 1990s, so was thrilled to discover NeoCities. I'm using this site mostly for fun activities and javascript experiments that I make for my schools and classes and for other teachers or students.

Right now, there is not much here, but I'll add some things as I finished them.

Go to:

• Updated 2025-01-21 Age Verification proof-of-concept. Still very rough, but the basics are there. Can you prove you are at least 21 by putting the pictures in order, quickly? If you can't it might be because you haven't been on Earth long enough. Only two topics so far. I'll add more as they are ready.
• 2025-01-06: Simplified Public-Private Key Pair Generation Demo — exactly what it sounds like. Shows the math behind creating public and private key pairs.
• 2025-01-04: Coin-Flip Probability Demo — have the computer flip any number of coins and keep track of heads and tails results.
• 2025-01-03: Simplified Diffie-Hellman key exchange demonstration — explains and sort of / kind of shows how two people can create a shared secret on an insecure channel using math.
• 2024-12-26: Fortune: a simple online version of the famous BSD Fortune program. (Now with more fortunes!)

You may also be interested in one of my other sites:

• ChrisSpackman.com: the site for my more professional documents and information.
• OsugiSakae.com: my personal and older stuff is here. May I suggest checking out "ELA Assignment: My Journal, Day 1 — a short story, set in the near future, dealing with GenAI agents in education.
• OpenHistory.org: my site for Free / Open content around Japanese History. I started it around 25 years ago, but have not updated it in a (very) long while. That will change soon, because I have switched back to LaTeX for it. (That just means I can update it more easily in the future, so I will.)
• Temporarily uploaded a gzipped tarball of The Encyclopedia of Japanese History, in case anyone is interested. I've recently had some success moving it back to LaTeX, so hope to resume development soon.