Build your own textbook
Check out these two science texts assembled from CK12 materials that align with units in Grade 9 and 10 science. View them online or download the "book" as a PDF, mobi or ePub for use on portable devices. If you like, sign up and assemble your own!
"CK-12 provides free access to high-quality, customizable educational content in multiple modalities suited to multiple student learning styles and levels, that will allow teachers, students and others to innovate and experiment with new models of learning.