Open Educational Resources (OER) are powerful for education. Below are a few resources.
PowerMyLearning is a national non-profit that leverages technology to strengthen the learning relationships among students, teachers, and families so that all students can succeed.
The CK-12 Foundation was founded with the mission to enable everyone to learn in his or her own way. We pair high quality content with the latest technologies. We equip students, teachers, and parents with everything they need. For free.