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04:49 Science & Technology How does hibernation work? Lesson duration 04:49 Manage Library 1,514,784 Views
09:03 Science & Technology Are GMOs good or bad? Lesson duration 09:03 Manage Library 13,385,584 Views
04:58 Social Studies How the world's first metro system was built Lesson duration 04:58 Manage Library 1,789,232 Views
05:21 History The rise and fall of the Byzantine Empire Lesson duration 05:21 Manage Library 5,939,598 Views
01:46 Health How good is your eyesight? A test! Lesson duration 01:46 Manage Library 16,218,162 Views
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05:18 Literature & Language The myth of Thor's journey to the land of giants Lesson duration 05:18 Manage Library 8,417,457 Views
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04:30 Numbers & Operations Where do math symbols come from? Lesson duration 04:30 Manage Library 2,423,857 Views
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