Pluto's reclassification (2006)

On August 24, 2006, the International Astronomical Union adopted a definition of planet that placed Pluto in the dwarf-planet category. The change came from a formal classification decision, not a change to Pluto itself.

Teaching use: Have learners compare the criteria in the astronomy text and explain how definitions help scientists classify objects.

Related reading: Pluto: A Dwarf Planet's Story

Amelia Earhart's transcontinental nonstop flight (Aug 24–25, 1932)

Amelia Earhart’s nonstop transcontinental flight began on August 24, 1932, and ended the next day. The linked biography provides context about Earhart and her earlier Atlantic flight; it does not narrate the Aug. 24–25 route. Keep the journeys distinct, and use a map plus an independent dated source to explore the transcontinental flight.

Teaching use: Use a map to follow the Aug. 24–25 route, but label the biography as context rather than evidence about this flight. Keep the two-day event anchored once, on its start date.

Ukraine declares independence (1991)

On August 24, 1991, Ukraine’s parliament declared the country an independent democratic state. A referendum confirming the declaration followed on December 1.

Teaching use: Ask learners to distinguish a declaration from the later referendum and to sequence the political events accurately.

Use the August reading calendar to explore the month.