Written in a style designed to appeal to teens, The History Cat presents world history topics in a more approachable way than textbooks. Topics are complete up to the Cold War and include:

• The Ancient World
• Medieval Europe
• Islamic Golden Age
• African Kingdoms
• Samurai Japan
• Chinese Empires
• The Mongol Empire
• The Black Plague
• The Italian Renaissance
• Scientific Revolution
• Age of Exploration
• The Industrial Revolution
• Age of Imperialism
• French Revolution
• World Wars I and II
• The Cold War

Subsequent topics are still under construction. This is an excellent basic level research resource for high school students.

As of this writing, the Go Social Studies, Go! website is defunct. Uhde has moved the material to a new site, The History Cat, which is linked above.

Learn the history of the world with the interactive booklets and videos on Go Social Studies Go! Sections include Ancient World, Medieval Times, Colonial Age and the 20th Century. The site is a work in progress, so material is not yet available in all sections. Useful for inclusion in lessons and research.

From site: As the Jewish people’s living memorial to the Holocaust, Yad Vashem safeguards the memory of the past and imparts its meaning for future generations. Established in 1953, as the world center for documentation, research, education and commemoration of the Holocaust, Yad Vashem is today a dynamic and vital place of intergenerational and international encounter.

The site provides educational videos, lesson plans, and links to online courses, as a living memorial to the Holocaust.

NeoK12 offers a set of YouTube videos explaining and illustrating European History.  Topics include the Byzantine Empire, the Dark Ages, the Mongol invasion of Europe, achievements of Leonardo da Vinci, the Protestant Reformation, the Inquisition, Napolean and Russia, fall of the Russian monarchy and the Russian Revolution.  All videos and lessons on this site have been reviewed by K-12 teachers and are safe for kids.

From site: 

HyperHistory is an expanding scientific project presenting 3,000 years of world history with an interactive combination of synchronoptic lifelines, timelines, and maps.

LearningReviews.com note:  This interactive timeline includes domains on significant people, events and maps, with areas of concentration in science, culture, religion and politics.  It is accompanied by a text history of the past 3,000 years.  An “Options” button includes significant information that cannot be categorized into the four domains.