Scott Foresman-Addison Wesley Mathematics (Diamond Edition) is a research-based Pre-K-6 curriculum that focuses on developing students' conceptual understanding and skills through step-by-step instruction. The focus is on key ideas in mathematics, rich problem-solving lessons that build the reading and writing skills necessary for powerful problem solving, and differentiated instructional options to meet the needs of varied learners. Measure the Difference! With Scott Foresman-Addison Wesley Mathematics (Diamond Edition), Student Understanding Adds Up, Problem-Solving Skills Multiply, and All Students Advance.