04:13 History Why do Americans and Canadians celebrate Labor Day? Lesson duration 04:13 660,615 Views
03:14 Social Studies Labor Day: Is it really a necessary holiday? Lesson duration 03:14 341,376 Views
03:50 Civics How is power divided in the United States government? Lesson duration 03:50 3,995,669 Views
11:32 Macroeconomics How state budgets are breaking US schools - Bill Gates Lesson duration 11:32 58,012 Views
