If you have not bookmarked the Kansas City Fed's educators page, you should. There are a number of resources there. They do a number of webinar's on all things economics. This webinar was very well done. Though I do not teach history anymore, I know I would have used this one if I still did. I love history and it really comes alive if economics is taught through a historical lens. My students always found US history more interesting if there was an economic bent to it.
Take a few minutes and explore both pages, you will not be disappointed.