Benchmark 1C
The Nature of Science: The Scientific Enterprise
Grades K-2, page 15

In doing science, it is often helpful to work with a team and to share findings with others. All team members should reach their own individual conclusions, however, about what the findings mean.

NSES Content Standard A 
Science as Inquiry: Abilities necessary to do scientific inquiry 
Grades K-4, page 122 
Communicate investigations and explanations. Students should begin developing the abilities to communicate, critique, and analyze their work and the work of other students. This communication might be spoken or drawn as well as written. 

NSES Content Standard E
Science and Technology: Understanding about science and technology 
Grades K-4, page 138 
Scientists and engineers often work in teams with different individuals doing different things that contribute to the results. This understanding focuses primarily on teams working together, and secondarily, on the combination of scientist and engineer teams.