Don't read the PowerPoint!! We have all sat through lectures where a teacher or professor stands at the front of the room and reads the presentation slide-by-slide. Nothing is more draining as a student. Now I know as a new teacher with a new subject it can be hard not to do such a thing. To put it simply, we are given too much to do and not enough time to do it. As a history teacher I fall under the Social Studies umbrella which means I have taught everything under that umbrella - geography, child studies, law - never mind that I have never taken any of those courses in my life. Ah well...what we all do as new teachers.
Now that I am teaching what I have a background in my lessons are far stronger. But it still takes hours to craft these presentations in an engaging manner for students to get out of them what they need. As teaching professionals we are well versed in the theory of multiple-intelligences. When done well these presentations will connect with a variety of students with different learning styles.
The linguistics intelligence minded student will learn from the notes taken from the lesson and reading them back afterwards as well as the discussions in class.
The logical-mathematics intelligence minded student understand the chronology of the story that is being presented. One event causing another through a chain of events.
The visual-spatial intelligence minded student will take in the images, maps, diagrams, and videos from the lesson and understand better as a result .
The naturalistic intelligence minded student will understand the geography of the region from the videos and maps and will understand why the individuals made their decisions.
The interpersonal intelligence minded student will learn best from the conversation generated between students and with the teacher during the presentation.
The Interpersonal Intelligence minded student will learn best from the time given to reflect on questions given as part of the lesson.
All of these combined will help the students understand the fundamentals of the lesson. With that said, the key component is the teacher. Take the time to know the lesson, read the history, and make your own connections. That way you will be able to stand at the front of the room and tell the story rather than read the points of information. Those points can guide you but as the teacher you can make it more interesting.
Don't read the PowerPoint!! But knowing that I have done it myself in the past with other lessons I know what a relief it can be when you have nothing for the next day and then you find the material you need. Better to read it than to have nothing.