My first batch of educational tools for use in OpenSim has been released, and is available at:
It's an IAR file, which allows you to load the objects into your inventory without affecting any existing build.
I'll also be adding in some tutorial videos to show how the tools work. The sound is a bit low on the first offering, but you get the idea. If you have any suggestions or problems then feel free to voice them in the comments (it's moderated so they won't appear straight-away).