NorthStar Fourth Edition, a five-level series, engages students through authentic and compelling content and empowers them to achieve their academic and personal goals. The approach to critical thinking in both the Reading/Writing and Listening/Speaking strands challenges students to move beyond basic comprehension to higher level analysis. Conceptualized to promote critical thinking, NorthStar infuses analysis, synthesis, evaluation, and application throughout every lesson, not just in a critical thinking section like in other series.