The new edition of the best-selling six-level Reading Explorer series will bring the world to the classroom like never before through new and updated topics, video, and visuals from National Geographic. Reading Explorer teaches learners to think and read critically to encourage a generation of informed global citizens. New to this Edition: - NEW Reading Skill sections explicitly teach and practice one academic skill or strategy to enhance learners' reading comprehension. - EXPANDED video sections featuring National Geographic video provide engaging opportunities for learners to synthesize information from multiple sources. - The UPDATED design blends text, charts, graphs and images, encouraging learners to develop visual literacy skills to improve comprehension. - NEW eBooks and online workbooks with National Geographic video and activities allow learners greater flexibility for independent practice.