Reading Explorer is a four-level reading series which uses carefully adapted "National Geographic" text, images and video to develop reading and vocabulary skills for learners of English. Stunning real-world content supported by stunning visuals develops learners' understanding of the wider world in which they live. Reading passages introduce a variety of text types, develop visual literacy, and incorporate graphic organizers, to help learners become better readers in English. Reading Comprehension activities include question types commonly found on high-stakes international exams. Vocabulary Practice activities build awareness of high-frequency vocabulary items and provide additional mini-passages for reading practice. Vocabulary Builder boxes highlight common collocations, affixes, and usage to develop learner independence. Video Activities include step-by-step activities for additional comprehension and vocabulary practice while motivating students to learn more about a topic. Rev