Help low intermediate ELLs learn math content in English with this unique Math Concepts and Vocabulary CD Card Set that combines interactive sound, full - color images and text when used with the Radius Audio Learning System. Set of 40 double - sided, write - on/wipe - off cards focuses on essential math concepts, including counting, spatial positions, order, patterning, addition, subtraction, measurement, shapes, fractions and graphs, plus math vocabulary with reinforcement questions. Cards link via custom barcode to a corresponding CD programmed to help students complete the activities and answer related questions. CD contains more than 45 minutes of audio content, including a variety of instructional activities, each of which can be completed by 1 - 4 students at a time. Cards measure 8.5" x 5". Aligned with Title I and Title III of No Child Left Behind.