Designed to meet the needs of students of all ages who are assessed below the high school level. Passages and exercises are specifically targeted for lower-level readers while focusing on higher order thinking skills. Key concepts and vocabulary are presented across the content areas along with thinking skills and graphic materials. Before and after each study unit, students will find a test. The first test is a brief diagnostic, and the concluding tests helps students measure what they have learned as they progressed through the unit. All test questions come with answer explanations for self-scoring and review.