The document discusses study models used in dental education. It provides views of the anterior, occlusal, lateral, heel, and posterior aspects of the models. It notes that the art portion should be 1/3 the height of the model, the anatomical portion 2/3, and the base 1/2 to 1 inch. Finally, it lists criteria for acceptable study models, including having all anatomy present and stone evenly mixed, with bases parallel to the occlusal table and cuts symmetrical.