ELA
Health
PAA References
Social Studies
Science
Below is a list of places where you can find free Full-Text Scientific Studies:
Public Library of Science- http://www.plos.org/
Proceedings of the National Academy of Science http://www.pnas.org/
Elife Sciences- http://elifesciences.org/
Highlife- http://highwire.stanford.edu/lists/freeart.dtl
Public Library of Science- http://www.plos.org/
Proceedings of the National Academy of Science http://www.pnas.org/
Elife Sciences- http://elifesciences.org/
Highlife- http://highwire.stanford.edu/lists/freeart.dtl