A mapmaking family from Inverness led a unit in West Marin School’s third-grade class this spring, guiding children in thinking about what belongs on a map and where they themselves belong. Dewey Livingston, his wife, Kerry, their daughter Molly and her husband, Richard Vallejos, spent a month visiting Ashley Dumbra’s class two days a week, giving lessons on history, landforms, cartography and the Coast Miwok. Students chose a place that was important to them—whether their…