If you want students to view slideshows from the lesson, or see a word document (either student work or a work sheet) you have to use another website. It's called slideshare and is at www.slideshare.net
The sign up process is quick and easy, so get through that then click on 'upload'.
You'll need to use the 'non flash uploader' as the new fangled faffy one doesn't work from school.
Browse your hard drive for the files (it takes pictures, documents, ppts and excel spreadsheets) and click 'open'. You can upload more than one at a time.
When they're uploaded, you'll see a screen like the one below, or click on the 'my uploads' tab if it doesn't show up. Click on the file you wish to show on your blog.
You'll see a screen like this one. Remember BADGER. Click on the blogger logo.
A new window will pop up which will say 'contacting blogger' for a while, then click on 'grant access' at the bottom.
After another short wait, you'll get a window that looks like the new post page on blogger. Fill out the post title, add some text if you want, but make sure you scroll down to the bottom of the screen. You'll find a drop down list with your blog address in it. If you have more than one blog, make sure you're uploading to the right one. Then click Blog this! (how exciting!!)
And you're done - in theory!!
There is another way to do embed things from slideshare too. You can click the 'embed' tag on the BADGER screen (told you to remember BADGER didn't I?!). Simply paste the html text into your own blog post and it should work. You have to have html enabled though - click 'edit html' on the posting screen in blogger (top right) instead of compose.
If you've got comments enabled, your students can feed back on worksheets or slide shows. Simple.
Good luck!!