1.1a Natural cycles and patterns include:

•Earth spinning around once every 24 hours (rotation),resulting in day and night

•Earth moving in a path around the Sun (revolution), resulting in one Earth year

•the length of daylight and darkness varying with the seasons

•weather changing from day to day and through the seasons

•the appearance of the Moon changing as it moves in a path around Earth to complete a single cycle

1.1b Humans organize time into units based on natural motions of Earth:



1.1c The Sun and other stars appear to move in a recognizable pattern both daily and seasonally.