Short Vowels Cd Card Set Radius - LER6921 - Bring effective Guided Learning into your classroom or Learning Center. This set of 40 double-sided, full-color Activity Cards includes a corresponding CD with associated audio tracks, programmed to help students complete the activities and answer questions about what they've learned. CD contains more than 30 minutes of audio-based content, including a variety of instructional activities for up to four students at one time. Cards measure 8.5" x 5" . Interactive learning for up to four students at a time. Skill-based card sets used with audio CD offer effective Guided Learning Double-sided Activity Cards link to CD with unique custom barcode