Good resources for teaching elementary science content abound, making science more accessible to everyone and helping teachers enhance their presentation of science topics. However, there is one important aspect of science that sometimes proves a bit more difficult to teach: introducing students to the idea of the nature of science. Nature of science speaks to how scientific knowledge is developed--from observations and inferences; it is also partially the product of a creative imagination (Lederman 1998). At the elementary level, it's important for students to understand that people have practiced science for a long time and that many people choose careers as scientists and spend their lives studying it (NRC 1996). It was these aspects of the nature of science that the authors of this article wanted to explore with second-grade students as they began a study of butterflies.