Finally, an uncomplicated way for your students to get their hands (and eyes) on a water erosion lab. (Still messy though, but great fundamental learning.)
Originally there was no formal student handout (they all started with a blank piece of paper and filled things in as led by the ppt), but I made one this year to help simplify and shorten the lesson. Same ppt and notes as the other link above, just includes Handout now. Use which ever appeals more to you (starting with blank paper or with the Handout).