You’ll be able to find worksheets, lesson plans, research materials, links for further research, and helpful explanations.

You won’t find an actual curriculum, as it’s still so general at that stage. Each school district and curriculum provider has their own scope and sequence, so the free stuff is a supplement to that. (Also, anyone who’s taken the time to put a full curriculum together is going to want money for it.) I’ve been looking ahead though, as my son will be starting general science next spring, and if you’re willing to dig through the sites there’s some really great stuff there.

If you look on the Apologia site at the different courses, they have the table of contents for General and Physical Science online. This will give you a great jumping-off point, sort of a scope and sequence of what to research. As far as free goes, I think this would be your best bet. Here are the links:

https://apologia.securesites.net/pdfs/TOC/gstoc.pdf?zenAdminID=36894e6c3b041a74015ad89bdf607952&zenAdminID=36894e6c3b041a74015ad89bdf607952&zenAdminID=28084ba172364435de5443b7c457524e&zenAdminID=2aba37c3eb36645e5f8736815c984562&zenAdminID=2aba37c3eb36645e5f8736815c984562&zenAdminID=7c5e7b73ac3febe125f6d0919adcd230&zenAdminID=7c5e7b73ac3febe125f6d0919adcd230&zenAdminID=7c5e7b73ac3febe125f6d0919adcd230&zenAdminID=7c5e7b73ac3febe125f6d0919adcd230&zenAdminID=7c5e7b73ac3febe125f6d0919adcd230&zenAdminID=7c5e7b73ac3febe125f6d0919adcd230&zenAdminID=7c5e7b73ac3febe125f6d0919adcd230&zenAdminID=87bfc951db69f9a57c86fa8ec71da276&zenAdminID=3cf93174c142e6bdb576c86c5f593099&zenAdminID=5fca27dad29c9af73f922b4045074cfe&zenAdminID=5fca27dad29c9af73f922b4045074cfe&zenid=09f5effac123cd9153aeb8337ea6507e

https://apologia.securesites.net/pdfs/TOC/ps2_toc.pdf?zenid=09f5effac123cd9153aeb8337ea6507e

https://apologia.securesites.net/pdfs/ps_literature.pdf?zenAdminID=f7a3b693ce7941dbe99d60efe648d83a&zenAdminID=5fca27dad29c9af73f922b4045074cfe&zenid=09f5effac123cd9153aeb8337ea6507e

Hope that helps!

http://www.lessonplanspage.com/Science.htm

http://homeschooling.about.com/od/freeprintables/qt/printables.htm

scroll down for the science ones

http://donnayoung.org/apologia/physical.htm#Lab

lab sheets here

and,

http://www.sciencenewsforkids.org