Benchmark 12A
Habits of Mind: Values and Attitudes
Grades K-2, page 285

Raise questions about the world around them and be willing to seek answers to some of them by making careful observations and trying things out.
 

NSES Content Standard A 
Science as Inquiry: Abilities necessary to do scientific inquiry
Grades K-4, page 122
Ask a question about objects, organisms, and events in the environment. This aspect of the standard emphasizes students asking questions that they can answer with scientific knowledge, combined with their own observations. Students should answer their questions by seeking information from reliable sources of scientific information and from their own observations and investigations.

NSES Content Standard A 
Science as Inquiry: Abilities necessary to do scientific inquiry
Grades K-4, page 122
Plan and conduct a simple investigation. In the earliest years, investigations are largely based on systematic observations. As students develop, they may design and conduct simple experiments to answer questions. The idea of a fair test is possible for many students to consider by fourth grade.