Scientists and engineers often work in teams with different individuals doing different things that contribute to the results. Women and men of all ages, backgrounds, and groups engage in a variety of scientific and technological work. Tools help scientists make better observations, measurements, and equipment for investigations. They help scientists see, measure, and do things that they could not otherwise see, measure, and do. Science in Personal and Social Perspectives Personal health Safety and security are basic needs of humans.
Safety involves freedom from danger, risk, or injury.
Student understandings include following safety rules for home and school, preventing neglect, and avoiding injury. Individuals have some responsibility for their own health. Nutrition is essential to health. Students should understand how the body uses food and how various foods contribute to health. Recommendations for good nutrition include eating a variety of foods, eating less sugar, and eating less fat.