Put science in a bag. Science and Children , 19-22. Evidence consists of observations and data on which to base scientific explanations. Using evidence to understand interactions allows individuals to predict changes in natural and designed systems. Models are tentative schemes or structures that correspond to real objects, events, or classes of events, and that have explanatory power.
Models help scientists and engineers understand how things work.
Models take many forms, including physical objects, plans, mental constructs, mathematical equations, and computer simulations. The primary objective of the lesson is to use models to help students develop an understanding of the nature of science. There are different kinds of models, such as drawings, mental, and physical devices. Our models may mislead us, suggesting characteristics that are not shared with what is being modeled. This research is useful because it suggests I should point out that students' drawings are mental representations of things they cannot see, and that these mental images and representations are actually models.