Final answer:
Stanley learns that digging holes is physically demanding and a form of punishment at Camp Green Lake. He feels proud when his hole is finished due to the sense of accomplishment and meeting expectations.
Step-by-step explanation:
Stanley learns several things from digging his first hole in the book "Holes" by Louis Sachar. Firstly, he learns that digging holes is physically demanding and requires persistence. He realizes that his muscles become sore and tired from the repetitive digging. Secondly, he learns that digging the holes is a form of punishment and is part of the daily routine at Camp Green Lake.
Stanley feels proud when his hole is finished because it represents an accomplishment and a form of mastery. He has overcome the physical challenges and completed a task that he initially found difficult. Additionally, at Camp Green Lake, the size and depth of the hole is seen as a measure of a person's strength and endurance, so Stanley's pride may also stem from meeting this expectation.