NSES Content Standard E  
Science and Technology: Understanding about science and technology 
Grades K-4, page 138 

Women and men of all ages, backgrounds, and groups engage in a variety of scientific and technological work. 

Benchmark 1C The Nature of Science: The Scientific Enterprise
Grades 3-5, page 16
Doing science involves many different kinds of work and engages men and women of all ages and backgrounds.