Professors who are effective lectures almost always appear to have a conversational tone for the lecture. This relaxed appearance is more likely to put the students at ease. It also gives them the sense that they can be and should be more engaged with the instructor because it is like a conversation that requires both parties to be involved. An instructor who is relaxed and easy going, yet in control of the classroom, will develop good rapport with the students while still maintaining respect and authority.
I believe that ineffective lecturing would include a failure to engage the students, an appearance that the instructor was talking down to or at the students that suggests a lack of respect, and an unwillingness to answer student questions during the lecture. An inability to clarify the textbook material is also an ineffective lecturing trait. In my field, we are often talking about anatomy, physiology, or nutritional sciences. In my experiences, some lectures are no more than the same dry, dense material out of the textbook. The lecturer has not put any context on the material which makes it harder to learn.
The ineffective teacher could improve the lecture by incorporating several strategies to engage the students during each lecture session. Making contact with the students could be accomplished by setting up several pauses in the lecture at regular intervals. These “breaks” in the lecture allow the students to absorb the material, to write down questions or thoughts on the material, to consult with their peers in the classroom through small group discussion, and to ask questions of the instructor. The students would know that each lecturing “segment” of the class session will be short with several opportunities for clarification of confusing material. Another suggestion for effective lecturing is to vary the style of the lecture by adding multiple examples or case studies. This gives the students an opportunity to use and develop problem-solving skills, and to use these skills in a variety of situations.
I understand that it could be easy for an instructor to fall into the "trap" of lecturing the whole time without engaging the students. In many respects it can be easier because the instructor would have less to prepare, especially when teaching the class for a second time, third, etc. For my teaching demonstration, I will devote preparation time to adding variety to my teaching methods. To this end, I will plan out several strategies to get students involved with their peers in small groups and with the whole class. This interaction will allow them to express their thoughts in written and oral form. As Davis points out, having students generate a self-explanation and sharing it with others can increase their level of understanding. This allows them to reinforce the foundations of learning: listening, contemplating the meaning of what was just heard, and outwardly expressing their understanding of that material.