Check out this site and let us know if you have questions: http://www.hippocampus.org/
HippoCampus Digital Content Resource
You may have heard of Khan Academy, PhET, etc. HippoCampus combines these two sites and others into one searchable collection of digital resources. Videos, simulations, textbook correlations are at your fingertips along with the ability to create customized playlists that you can share with students. These resources would also be a great resourcce for flipping your classroom!