The document discusses various active learning strategies that can be used in lectures to engage students. Some of the strategies presented include opening questions to focus students on the topic, think-pair-shares to facilitate sharing of ideas, focused listing to recall prior knowledge, brainstorming to make creative connections, inserting question slides to check for understanding, note checks to compare information, and two minute papers to summarize key points. These strategies encourage student participation, help instructors assess learning, and promote retention of the material.