Have you checked out the new Open Educational Resources page that I have added to the school library (i-Media) website? I just added a new resource called Open Osmosis, which contains thousands of health education resources.
What is an Open Educational Resource (OER)? Open Educational Resources are free and "open" to use. They have been collected to ensure equity and access for everyone. Many resources are from higher educational institutions, such as MIT and Yale. Anyone who uses the internet, however, can create an OER collection, just as anyone can create a website, so...before you use an OER resource, be sure to use an Achieve OER Rubric for source evaluation, to ensure the materials meet the specific needs of your students.
For more information in regard to OER's please read this Edutopia article.