CK-12 Earth Science for Middle School FlexBook® covers core earth science concepts and includes PLIX, real world examples, videos, and study guides.
Questions? Feedback?
Check out our FAQ or join the conversation at our Facebook group.
A totally free index of Internet resources for the K-12 Community.
CK-12 Earth Science for Middle School FlexBook® covers core earth science concepts and includes PLIX, real world examples, videos, and study guides.