Poet and psychotherapist Lisa Varchol Perron and her husband, Taylor Perron, a geology professor, have combined their different areas of expertise, with appealing, accessible, and informative results. Told in verse and accompanied by carefully composed watercolors, this simple introduction to geology opens by a river; one child looks at rocks in the grass while in the distance an adult and several other kids, one of whom uses a wheelchair, return from the waterside. Ensuing spreads depict diverse children interacting with various types of rocks, from chert to granite. A curious youngster takes pleasure in stacking pieces of shale. A fearful child finds comfort in holding a piece of obsidian. Agate makes a delightful gift for a loved one. Some activities will be familiar to readers: A bespectacled youth draws on the sidewalk with chalk as a seagull looks on; another child tosses pumice into the water and smiles as it floats. Each spread contains a four-line stanza that scans well. The useful backmatter includes excellent descriptions of the 10 kinds of rocks presented; the authors also remind readers that “some rocks need to stay put in order to preserve the geology and ecology of an area or to respect local beliefs and practices.”