The web sure makes learning fun! One example: from Geometry to DNA to literature to ancient civilizations, the Interactives website has more than 20 practical hands-on lessons, mostly for high school and middle school students (but also fun for adults). Give it a try!
The shorthand kids use online and on their phones is going mainstream. Today I found messages written in this cryptic language on the Valentine Tootsie Rolls I brought to school! If you need help translating your valentine candy messages (or other messages!), try this helpful list from NetLingo: The List of Chat Acronyms & Text Message Shorthand.