There is often pressure to cover a lot of content in lecture. However, it is unrealistic for students to sustain their attention throughout an entire lecture period. Students learn best when they can engage with the content rather than just listening! During the lecture engage your students in problem solving, discussing or debating content, practicing skills, or presenting or summarizing information. Even a few 2-minute breaks during class increases students’ learning and retention! Not convinced? Read: www.tinyurl.com/activeLearningNYT
Example: "Discuss the question with your partner."
See this and related tips as a Tip Sheet: http://csteachingtips.org/tips-for-lecturing