For sample lessons that are used in the Outreach Course, click on the grade levels:
PhET Simulation Lessons PhET provides fun, free, interactive, research-based science and mathematics simulations. UTeach Outreach partners with PhET to create interactive, hands-on science and mathematics lessons and provide professional development for these lessons. Check out the website http://phet.colorado.edu/ or view UTeach sourced Lessons.
These hands-on lessons are able to be completed in 20-30 minutes with small or large groups of people.
Magic Sand and Insta-Snow Lesson
Here are some sample lessons: