Cambium Learning Group, Inc. provides educational technology solutions in the United States and internationally. It operates in three segments: Learning A-Z, ExploreLearning, and Voyager Sopris Learning. The Learning A-Z segment offers PreK-6 technology-enabled learning resources. It operates subscription-based Websites, including Reading A-Z, Raz-Kids, Headsprout, Science A-Z, Writing A-Z, Vocabulary A-Z, and ReadyTest A-Z that provide online supplemental books, lessons, assessments, and other instructional resources for individual classrooms, schools, and districts. The ExploreLearning segment offers Gizmos, a library of interactive online simulations for math and science education in grades 3-12; and Reflex, an adaptive online solution for math fact fluency development for grades 2-8. The Voyager Sopris Learning provides technology, materials, and professional development for educators to ensure students graduate prepared for college, career, and satisfaction in life after K-12. This segment offers LANGUAGE! Live, a literacy solution; Language Essentials for Teachers of Reading and Spelling (LETRS), a professional development solution; Step Up to Writing, a writing program; TransMath, a skill-based mathematics intervention program; Vmath, a targeted math intervention program; Velocity, a K-5 supplemental literacy intervention solution; and Kurzweil 3000, a reading, writing, and learning software. It also provides DIBELS Next, a K-6 reading screener; Read Well, a K-3 literacy program; REWARDS, a 3-12 supplemental program; TimeWarp Plus, a K-8 extended-day and/or summer school program; and LANGUAGE! The Comprehensive Literacy Curriculum, an intervention for students in grades 4-12. The company serves private and charter schools, teachers, home school and parent consumers, and other companies through its sales force, as well as e-commerce and Internet. Cambium Learning Group, Inc. was incorporated in 2009 and is headquartered in Dallas, Texas.