When something turns around a center point, like the Earth turns around every day.
Rotation can make people think of movement, change, or cycles.
Examples:
The Earth's rotation makes day and night.
The rotation of the fan makes the air move.
The rotation of the Earth makes the sun come up.
The rotation of the Earth is why we have days.
The rotation of the Earth never stops.
The rotation of the Earth is what makes time pass.