Prism Reading Level 4 has 8 units to develop vocabulary, academic, and critical thinking skills. Students experience topics through fascinating readings in a wide variety of genres and formats to become familiar with material they might face in or outside the classroom. Each book includes a single-use code to access the Digital Pack that includes an eBook with video, Digital Workbook with extra practice to further improve reading, vocabulary, and language development, and one new reading per unit. Self-grading activities in the Digital Workbook help with learner autonomy and allow teachers to spend less time grading and more time teaching.