Measuring Time: Student Activity Book (1994)

Chapter: Counting Days: Devising a Calendar

Previous Chapter: Does the Sun Move?
Suggested Citation: "Counting Days: Devising a Calendar." National Research Council. 1994. Measuring Time: Student Activity Book. Washington, DC: The National Academies Press. doi: 10.17226/21021.
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Suggested Citation: "Counting Days: Devising a Calendar." National Research Council. 1994. Measuring Time: Student Activity Book. Washington, DC: The National Academies Press. doi: 10.17226/21021.
Page 18
Suggested Citation: "Counting Days: Devising a Calendar." National Research Council. 1994. Measuring Time: Student Activity Book. Washington, DC: The National Academies Press. doi: 10.17226/21021.
Page 19
Suggested Citation: "Counting Days: Devising a Calendar." National Research Council. 1994. Measuring Time: Student Activity Book. Washington, DC: The National Academies Press. doi: 10.17226/21021.
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Next Chapter: Predicting the Phases of the Moon
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