-Vocabulary and grammatical structures have been carefully controlled and graded over the three levels of the series to allow students a comfortable progression from easily accessible readings to more challenging readings. -Exercises in the series have been designed to practice reading and comprehension skills useful for students interested in test-taking strategies. -Reading Challenge is suitable for both classroom use and self-study, although students in the classroom will benefit from the additional activities presented in each unit focused on developing speaking, listening, and writing skills. Key Features: -Non-fiction passages accessible to low-proficiency readers -Exercises designed to develop reading skills and basic vocabulary -Common idiomatic expressions incorporated within each passage -Extension activities that allow students further reflection on the topic -Audio supplements to accompany each unit -Annotated Teacher`s Guide with Answer Key and additional activities