Have you watched COSMOS: A Spacetime Odyssey, hosted by astrophysicist Neil deGrasse Tyson? The National Academies Press has put together the Cosmos collection of supplementary materials to go along with the TV program. The books are available for free download.
The National Academies Press
From David Bauman, SAS Portal -- A new book has been released by the National Academy Press and can be downloaded for free at: http://www.nap.edu/catalog/18612/stem-integration-in-k-12-education-stat... are provided in the Digital Repository. STEM Integration in K-12 Education examines current efforts to connect the STEM disciplines in K-12 education.