domino theory: US History 1877-present (EOC) 🌐 Ver en Español
History
History
Vertical Alignment
TEKS:
6th | 6.1(B), 6.7(B) |
USH | US.8(D) |
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- Visual
- Word wall visual
- Lesson Plan
- Lesson Materials
Structured Conversation Questions
Observational
What was the domino theory?
The domino theory stated that...Relational
How was the domino theory related to containment?
The domino theory was related to containment because...Inferential
After communist North Vietnam took over South Vietnam in 1976, the domino theory only held true for Laos and Cambodia. Why do you think it did not hold true for other Indochinese countries?
I think the domino theory did not hold true for other Indochinese countries because...
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Students might notice in this visual:
- The domino effect is when one domino is pushed down and the rest follow.
- Countries like China, the USSR, and North Vietnam were communist countries.
- Countries like South Vietnam were democratic countries.
- Ho Chi Minh believed that all of Vietnam should be communist.
- Eisenhower, president of the United States, believed that if one country fell to communism, more countries in the area would also fall, just like the domino effect.
EXTENDING THE DISCUSSION
After the observational question, randomly call on one or more students to share what they or their partner answered. Then ask the class, “Did anyone notice…?” using the suggestions above or anything else you’ve noticed.
After the observational question, randomly call on one or more students to share what they or their partner answered. Then ask the class, “Did anyone notice…?” using the suggestions above or anything else you’ve noticed.

Students might wonder:
- Why did the U.S. believe so strongly in the domino theory?
- Did U.S. actions in Vietnam actually stop the spread of communism?
- Why did the theory only hold true for Laos and Cambodia?
- What strategies did the U.S. use to act on the domino theory?
- How did people in other countries respond to the U.S. involvement?
EXTENDING THE DISCUSSION
After students have shared what they notice, ask the class, “Did anyone wonder…?” using the suggestions above or anything else you might think is interesting or relevant to the lesson.
After students have shared what they notice, ask the class, “Did anyone wonder…?” using the suggestions above or anything else you might think is interesting or relevant to the lesson.

Example student responses
To the observational question, What was the domino theory?
LOW-LEVEL
The domino theory said if one country fell, others would too.
HIGH-LEVEL
The domino theory stated that if one country in a region became communist, nearby countries would also fall under communism like a row of dominoes.
RESPONDING TO RESPONSES
Emphasize and celebrate each student’s use of the key vocabulary to support a culture of “no wrong answers.”
Emphasize and celebrate each student’s use of the key vocabulary to support a culture of “no wrong answers.”
