This is an excellent review/summary of an edited volume that shows the value of geographic thought and its importance in the modern world. This review conveniently gives a one paragraph synopsis of each chapter. It does not need to be read chronologically, so you can pick and choose what you find relevant to your course. The top 10 are (in order of inclusion in the book): the Idea of the Map, the Weather Map, GIS, Human Adjustment, Water Budget Climatology, Human Transformation of the Earth, Spatial Organization and Interdependence, Central Place Theory, Megalopolis and Sense of Place.
Via Seth Dixon