Since we don't use any specific "curriculum," I find Teaching Blog Addict a very helpful site. (For more on our homeschooling style, click on the Charlotte Mason tab above.)
And as if that weren't enough...they also post the links to the previous Friday (in case you missed it)....AND the Friday before that! Of course, from each one of those posts, you'll also find the links to the previous Friday and the Friday before that....... They seriously don't want you to miss out on FREEBIES! You can see why it's called Teaching Blog Addict! :)
Regardless of your teaching style (we homeschoolers have more options in this area!), you may find something useful--and for free! I love it!