I absolutely love this collection of unit studies! Some of the links don't work but I've found most of those items through search engines. This resource has been extremely helpful for me, providing many vocabulary exercises, questionnaires and other activities that will reinforce each topic in the mind of the students. It's great for all ages, as there are several different kinds of activities included in each section. I highly recommend it to anyone considering a world history course but not wanting to spend a huge amount of money.
[5 of 5 Stars!]