This is not about Montana history or heritage education or primary sources or any of the other things I usually write about. But I thought it was brilliant and potentially useful, especially for high school English teachers.
In his slideshare "How to Kill a Word," writing coach Patrick McLean explains how and why writers should tighten up their writing. My coworker and I made it interactive by trying to guess his edits.
I also liked his slideshare "The Road to Hell is Paved with Adverbs."
You can find more of McLean's stuff at his website, good words (right order).