There are some articles written for the local Free/Open Source Software group.
Fun with a Binary Clock - A bit of time spent with binary
Animated GIF "delay" graphic - A tutorial using Inkscape and Imagemagick
What Does "Open Source" Mean? - It isn't too complicated.
Coding for Fun - You can have fun while learning to take control of your computer.
Using Unicode - You have access to many more characters than show on your keyboard. ⇨ è ♽ é
Unicode (UTF-8) Codes - some UTF-8 characters I use frequentlyInformation Multipliers - Some inventions have had a significant effect on access to information.
Moving to Open Source Software - a blog to which I regularly contribute
"Can I Carry Your Books?" - Paperless Textbooks - ebooks in education
Computing in the Cloud - Putting software and your data on Internet servers
Distributed Proofreading - Getting public domain texts into ebook format
Kgeography - Make sure you can identify the states of your country
5 Square - a simple puzzler for your students
Playful Exploration - Adult Computer Learning with less trauma
Butterbox - A "learn by doing" project I did with my middle school students
The Daily Create - What creativity stimulation can be in the digital world.
Metric Conversion - making the conversion between units easy.
OpenDyslexic - A accessibility font you can use to help dyslexic readers.
"Chaos" in Education - Education isn't just passing on knowledge.
Open Data Project - Cars at the Corner - Students collect data for analysis.
KDE Userbase Entries: (These are all elements of the KDE Software Compilation and the KDE Desktop generally used on a GNU/Linux computer.)