Free Vector Drawing Tools

If you want to do some vector drawing then there's a wide range of tools available:

• Draw in Google Docs - very simple to use and available online 
• Dia is good if you're after a download. 
• Libreoffice has a nice drawing package included too
• Scratch has some basic vector drawing tools and is great for interactive stories

Inkscape is also very good, but I find it too complicated for most primary students. I would also like to mention that PowerPoint 2013, because it's free functionality if you already have office. It has a complete set of vector tools which I'd say are as good as older versions of illustrator. I use it to teach my year 4 students drawing and animation and they love it.