Holt Ancient World History Text book - All in PDF's, perfect to load onto Google Classroom.
Ancient World History - FOR 8th Grade - Open Educational Resources - here are some open resources to use. See this site for additional sources.
Khan Academy - Link to Big History Project - FOR 8th Grade - This site has free resources that are geared around the Big History Project, which is an interesting approach to teaching history.
World History Textbook - This is a site that has scanned copies of the chapters of our blue World History text.
Crash Course World History - This YouTube sensation has a plethora of brief videos on a variety of US, World, Economic, Government, and Politics.
Modern World Sourcebook - This site has a wide array of primary sources for many topics related to World and European History.
Ancient History Sourcebook - The same site for the Modern World, these documents address the Ancient World.
AP Central European History - The Course and Exam page
AP Central World History - The Course and Exam Page
The Avalon Yale Project - This site has an enormous collection of primary sources for both World and American history.
Europeana Collections - Thousands of sources - all things European in nature - Art, Music, Wars, etc.
World Digital Library - This site has thousands of curated documents. Documents are also presented in collections per topic.
Always Interested - This is Deb Schiano's website that is loaded with information. This link will take you to her Historical Primary Source page.
Best History Sites - This site as curated many different sites (some already linked here) but you'll find them on one page.