This set includes Leveled Texts for Earth and Space Science, Physical Science and Life Science. Each book features texts that are written at four different reading levels to give every learner access to the content. Each two-page text includes matching pictures so each selection appears the same to students. Comprehension questions about the texts are provided, also on varying levels, so that every student can be successful. Teacher Resource CD includes Microsoft Word versions of the texts so teachers can further adapt, as necessary, for their population of students. Full-color versions of the texts and digital copies of all the images are also included on the Teacher Resource CD. Set is designed for children in fourth-grade through 12th-grade.