9/11: One Day That Changed the World

OER Project
OER Project
Sep 1, 2026

Get a full lesson on globalization and conflict here: https://oer-prj.com/9-11
The morning of September 11, 2001, was the deadliest terrorist attack in US history. In the chaos and grief that followed, one question dominated: who did this, and why? Teach this video to help students connect history to our world today.

Guiding Questions
01:51 What happened on the morning of September 11, 2001?
04:49 Who was responsible for the attacks, and what does the evidence show?
06:19 How did the US respond internationally after 9/11?
09:39 What changes did 9/11 bring to life in the United States?
10:36 In what ways are the effects of 9/11 still felt today?

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