NATIONAL STANDARDS: National Social Studies Standards, Grades 5-8- Individual Development & Identity: IV- Relate such factors as physical endowment and capabilities, learning, motivation, personality, perception, and behavior to individual development.- Production, Distribution, & Consumption: VII- Explain the difference between private and public goods and services.National Science Standards, Grades 5-8- History and Nature of Science: VII- Science as a human endeavor: Women and men of various backgrounds engage in the activities of science.