Includes these STEM activities for Grades 3 - 6: Background information about the North American (tallgrass) Prairie, an endangered ecosystem. Suggestions on how to write a story about the prairie and an original story, Rudbeckia, the Prairie Fairy, written by Adalyn Arsenault and Betty J. White. “Mapping Subtraction Problems”, The Prairie Fire, a fun, fun, fun activity. Answer Key for “Mapping Subtraction Problems”.