I just got the free download for unit one of this curriculum and I must say it is PERFECT !!! The first unit is free if you subscribe to their email so it does not hurt to try it out. Included is history, geography, science, and the arts. I absolutely love it !!!!!!!!!! http://www.layers-of-learning.com/
Ps. I did buy the planers for grades k-4 and 5-12 they are so worth the .99 each
Susan Khan