In these new essays, Williams explores the concept of erosion: of the land, of the self, of belief, of fear. She wrangles with the paradox of desert lands and the truth of erosion: What is weathered, worn, and whittled away through wind, water, and time is as powerful as what remains.

Ms. Frizzle takes her class on a rainy ride through the life cycle of a water drop, on the rough 'n tumble journey of a boulder subject to water erosion, and on a bubbly trip to the bottom of Walkerville Lake. Featuring lots of watery wonders, these shows will have your child soaking up some science while have a wet and wild blast.