This file is designed to provide the structure of a basic word work unit using words in science related to Ecosystems. All printables in the unit are extracted from my more extensive Spelling & Vocabulary Unit on the same subject. The materials work well with Daily 5 classrooms, as well as any other spelling and vocabulary format. I use these materials in Language Arts classes as well as my science classes. Leveled spelling and vocabulary quizzes are included, as well as ideas for independent word work and spelling practice. Directions for accessing online activities using this list are included in the file. The preview shows everything available in the download.