- Science involves creating and testing knowledge claims about the natural world using methods and standards of evidence. It aims to build an objective body of knowledge through experiments and observation. - There are four main scientific disciplines: physics, chemistry, biology, and earth/space sciences. The boundaries between them are blurred with overlapping fields like biophysics. - Science uses mathematics and technology as tools. It teaches both facts and "big ideas" like that everything is made of chemicals in chemistry. The purpose is to prepare both future scientists and an informed public.