I have added two new "Tech Tools" under the Technology tab.  Audioboo is another audio recording device that is fairly easy to use and free.  Youblisher is a great free tool for uploading your pdf documents to your website or blog.  It makes it really easy for your viewers to navigate through your document (similar to how you would browse through an online catalogue).  Definitely check these out!

As I was planning a halving/doubling lesson for Grade Five on Thursday, I happened to come across this fantastic site.  It has linked hundreds (maybe thousands?) of teacher-created files (pdfs, docs, powerpoints, and more) suited to the topic you are researching.  I'll provide the link to the main page, then you can navigate from there by selecting from the subjects listed along the left-hand side of the page.

http://www.primaryresources.co.uk/