Typically, you'll plan more than one activity per class, so creating transitions between those activities is crucial. Students need to know when you're changing the focus of the class. When writing transitions, ask yourself, what is the significance of each of these activities? How do they connect to the daily goals? Why did I arrange them in this order? Is there a more logical way to organize these procedures?
Be sure to write out transition statements in your lesson plans so you don't find yourself grappling for explanations on the spot. If you can't explain the significance of an activity, look back at the unit assignment sheet or the description of goals in your syllabus. If the relevance of an activity is still unclear, replace it with something different to satisfy the same goal.