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Grade 5 Social Studies · World 1: Tools of the Trade · Level 5
Decades and Eras
Turn dates into decades and centuries.
Warm-up, learn, try it together, practice, then a quick check. About 15 minutes.
What children learn in Level 5
- Historians group years so that the story is easier to follow. A decade is ten years. The years 1920 to 1929 are called the 1920s.
- A century is one hundred years. Here's the tricky part: the 1900s were the 20th century. To find a century, add one to the first two digits. 19 plus 1 is 20.
- We're living in the 21st century now, because this century's years start with 20.
- An era is a long stretch of time with something in common. It may be named for a problem, a war, or a change, like the Great Depression or the Digital Age.
Georgia Standards of Excellence in Social Studies:
- IPS.13 — Information Processing Skill 13: translate dates into centuries, eras, or ages (mastered in Grade 5)