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- Lesson Plan (3)
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- Type: Lesson Plan
- Grade Levels: Middle School: Sixth Grade through Eighth Grade
Learn about the Hoover Dam, located where the Colorado River forms the boundary between the states of Nevada and Arizona,
- Type: Lesson Plan
- Grade Levels: Middle School: Sixth Grade through Eighth Grade

Most Americans know the clarion call "Remember the Alamo!" and have a hazy recollection that the "fort" originally had been built as a Spanish mission. What is less well known outside the Southwest is that the Mission San Antonio de Valero–the Alamo–was only one of a chain of missions along the San Antonio River. Established between 1718 and 1731, these missions were built not only to spread the faith of the conquistadors, but also to serve multiple foreign policy objectives for the Spanish.
- Type: Lesson Plan
- Grade Levels: Middle School: Sixth Grade through Eighth Grade