Leap Year

Holidays & Events

Int
Teens & Adults
Grades 6–12

In this lesson, students learn the reason for leap years and how to calculate when the next one will be. They also learn some history about calendars. Includes research questions about leap seconds and the Birthday Paradox.

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Focus

topic-based
4-skills
interpretive

Vocabulary

divisible
synchronize
shift (noun)
correction
off track
reform (verb)
astronomer
century
adoption
advise
A spinning paper plane
A spinning paper plane