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 they could not otherwise see, measure, and do. Abilities to distinguish between natural objects and objects made by humans Objects can be categorized into two groups, natural and designed. 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. Science and technology in local challenges People continue inventing new ways of doing things, solving problems, and getting work done. New ideas and inventions often affect other people. History and Nature of Science Science as a human endeavor Science and technology have been practiced by people for a long time. Men and women have made a variety of contributions throughout the history of science and technology.