Final answer:
The best guideline for independent practice that promotes student success is to match the difficulty level of the tasks to the students' current skills.
Step-by-step explanation:
When teachers assign independent practice, the goal is to refine and strengthen students’ skills. The guideline that promotes success in this context is to match the difficulty level of the practice with the students' current skill level. Assigning tasks that are too easy will not challenge them adequately, while tasks with unclear objectives or that are too difficult without providing appropriate support can lead to frustration and disengagement. Effective independent practice also involves guidance that encourages self-discovery and the application of learned concepts to real-world scenarios to engage students.