Final answer:
Errorless Teaching uses a most-last prompt hierarchy to provide a high level of support initially that is systematically reduced to enhance learning without mistakes.
Step-by-step explanation:
Errorless Teaching uses a most-least prompt hierarchy. This instructional approach is designed to ensure that the learner is always successful by providing a high level of assistance initially and then systematically fading the level of support as the student demonstrates the ability to perform the task independently. The goal is to prevent or significantly reduce the chances of the student making mistakes during the learning process, thereby fostering a more positive learning experience.