Plural form of 子供 (child), referring to multiple children in a general sense.
公園で子供たちが遊んでいる。
Children are playing in the park.
子供たちに読み聞かせをする。
I read aloud to the children.
The children are playing energetically in the park.
The parents raised their three children with great care.
The teacher prepared a special lesson for the children.
Volunteers are teaching the children how to read.