NSES Content Standard D  Earth and Space Science: Objects in the sky  Grades K-4, page 134  The sun, moon, stars, clouds, birds, and airplanes all have properties, locations, and movements that can be observed and described.

 
Benchmark 4A The Physical Setting: The Universe
Grades K-2, page 62
There are more stars in the sky than anyone can easily count, but they are not scattered evenly, and they are not all the same in brightness or color.

Benchmark 4A The Physical Setting: The Universe
Grades K-2, page 62
The sun can be seen only in the daytime, but the moon can be seen sometimes at night and sometimes during the day. The sun, moon, and stars all appear to move slowly across the sky.

Benchmark 4A The Physical Setting: The Universe
Grades 3-5, page 63
The patterns of stars in the sky stay the same, although they appear to move across the sky nightly, and different stars can be seen in different seasons.