What is a full-scale working model used to test a design concept called?

A full-scale working model used to test a design concept is referred to as a prototype. Prototypes serve as tangible representations of ideas and designs, allowing designers and engineers to evaluate the feasibility, functionality, and performance of their concepts. By creating a prototype, teams can identify any necessary adjustments or improvements before moving forward with production or implementation.

In contrast, a template refers to a pre-designed format or guide for organizing information or creating specific types of documents, but it does not involve the testing of a physical design as a prototype does. A model can be a broader term that may include various representations of a concept, such as scale models or simulations, but it does not specifically imply a working version meant for testing. A design plan outlines the steps and processes for creating a product but does not include the physical manifestation of that product, like a prototype does. Therefore, the use of the term prototype accurately describes a full-scale working model focused on testing and refining a design concept.