This product includes an one DIGITAL interactive book on the BOOM learning website. This is a digital version of CVI Alphabet Interactive Books (only a single level is included). This high contrast leveled DIGITAL book is designed for students with Cortical Visual Impairment (CVI), students in early intervention, and special education students. Research shows that students with CVI respond well to high contrast and bright colors. In addition, students respond well to simple pages with minimal v