Contrived experiences are edited versions of reality used as substitutes for real things in the classroom. They are designed to simulate real-life situations when bringing the real thing is not practical or possible. Varied types of contrived experiences include models, mock-ups, specimens, objects, and simulations. Models are reproductions of real things on a smaller or larger scale. Mock-ups arrange parts to represent reality. Specimens and objects represent typical examples. Simulations allow active participation to learn or apply skills. Contrived experiences are used to overcome limitations of space and time, edit reality to focus on parts or processes, overcome size difficulties, understand inaccessible concepts, and help students understand abstractions.