Free curriculum links compilation:
http://www.teach-nology.com/worksheets/language_arts/ A nifty site filled with worksheets ranging from beginners and working your way through to advanced language.
http://www.design-your-homeschool.com/e ... mentebooks - Is great for science related experiments teaching your children about magnetism, electricity, chemistry and different aspects of science. *These experiments on the site are given to you for free with video tutorials.*
http://www.uq.edu.au/_School_Science_Le ... nceLessons - This is an excellent free resource for science which categorizes different sections of science for years 1- 6
http://www.eequalsmcq.com/classicsciinfo.htm - Good for introduction to biology, physics and chemistry. You can obtain one of the books for free but then the others you can buy for a low cost. **PLEASE NOTE: I am NOT affiliated with this website, I just think it's a good science curriculum**
Cant help you out here since I don't know which country history you want hehe
http://musicmoz.org/Education/Courses_and_Lessons/ - Although a lot of children do learn music, I'm never fussed with it and most of the time don't teach it.
http://www.kinderart.com/ Is for free art resources. You will have to look around the site and find what you are looking for. A vast range of lessons on this site.
This is what I have found so far and will continue to find free helpful resources for you, however I am rushed to go to work now but I will keep posting later tonight.
I wish you goodluck in your homeschooling success !