My all time favorite Freebee sites are:
JMJ Publishing (Hope 4 Me)
(scroll to the middle of the page
for subjects) There are subscribed materials there too,
however there are alot of nice freebees. I am
a lifetime member of this site.
These materials are in German, but many of them need no translation
as they are universal. Just go to the left side and start clicking on the
links at the top left, then another menu will open just lower to the left.
Click through and see what interests you. Then scroll down on the
main page and open the pdf files. All of these are freebees!