Here is a unique presentation that's on Earth Science. In it, learners see that Earth Science is a science made up of four main categories: Geology, Astronomy, Meteorology, and Oceanography. Pupils are assigned a task. They must find two newspaper articles or pictures with captions that relate to two of these Earth Sciences. They must also answer three questions about the Earth Science article or photo they bring in. This is a fine PowerPoint in that it has a most-worthwhile assignment embedded in it!