Many people think of earthworms as small, slimy creatures that belong in the garden. To teachers, however, earthworms are delicate animals that can help young students develop important science-process skills such as observation and data collection. This article describes the authors’ three-day classroom exploration, Worms Out of This World, a unit in which second-grade students observed live earthworms and recorded their observations in a learning log. Along the way, students sharpened their observation skills and were motivated to learn science.