“What’s It Like Where You Live?” is a unit that involves an extended comparison of biomes, defined as regions characterized by distinctive climate, plants, and animals. By designing the curriculum around the Standards, the author was able to sustain the children’s focus. The cornerstone for the unit was the active engagement described in Content Standard A—Science as Inquiry. Students regularly asked questions of themselves and others, planned and conducted investigations, and collected data that was used to build their understanding of the unit’s key concepts.