Here's the Water class lecture so you can download and see all the images. I talk through these as part of the introductory spiel that makes up the first part of each Water class and the students are welcome to keep these after (as long as they are for educational purposes, etc). The cycle of elements starts with the Rocks (Earth) and continues with Clouds (Air), Water, Fire and Ether. The Water class also contains an optional suminagashi marbling component, depending on interest.
Water Course Initial Talk