NSES Content Standard D  Earth and Space Science: Changes in the Earth and sky  Grades K-4, page 134  Objects in the sky have patterns of movement. The sun, for example, appears to move across the sky in the same way every day, but its path changes slowly over the seasons. The moon moves across the sky on a daily basis much like the sun. The observable shape of the moon changes from day to day in a cycle that lasts about a month.

 
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 K-2, page 62
The moon looks a little different every day, but looks the same again about every four weeks.

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.

Benchmark 4B The Physical Setting: The Earth
Grades 3-5, page 68
Like all planets and stars, the earth is approximately spherical in shape. The rotation of the earth on its axis every 24 hours produces the night-and-day cycle. To people on earth, this turning of the planet makes it seem as though the sun, moon, planets, and stars are orbiting the earth once a day.