OpenEd offers a massive library of free educational games, videos, practice assessments, and tutorials. This week they expanded their catalog by adding more than 1,000 new resources aligned to Next Generation Science Standards. These resources come from notable content producers including SciShow, CrashCourse, and Minute Physics all of which have been featured many times on FreeTech4Teachers.com.
All of the resources available through OpenEd can be shared with your students through the popular Google Classroom and Otus learning management systems. You can also use the OpenEd Google Docs Add-on to create lesson plans that incorporate the resources you find in OpenEd's library. The video below demonstrates how to do that.