9th - 10th: 12-15 minutes
11th - 12th: 15-18 minutes
Go to this site: Digital Promise. Scroll to the bottom and there is a filter. Filter your grade level and subject, and they will give you a huge list of resources tailored just for you!!!!
This site: Share My Lesson also has a filter! Custom search through projects, resources, and lessons uploaded by teachers!
This is the last page I'm working on. So come back and see what is added! In the waiting, check out the subject area on the specifics page!