Our 7th grade science teachers, including me, are testing out the CK-12 online textbook and resources this year. We have a 1-1, 24/7, laptop program where 7th and 8th graders have school issued laptops and can bring them home at night and on the weekends.
You can create your own textbook from scratch by making selections from the thousands of resources, or use the one they have as a guide and pick and choose what you would like the students to access.
You can create your own group, invite students join, assign reading or quiz assignments, and check on their progress.
Has anyone else tried CK-12? If so, would love to hear your thoughts on it.
Here is the life science Flex-Book: http://www.ck12.org/life-science/