Providing Goods explains how four different types of goods—blue jeans, paper, bread, and ice cream—are made. While each of the four books focuses on a different type of good and the specific process for getting that good to consumers, the same key concepts are developed across books to help students focus on the big ideas. The theme explores the process of transforming raw materials into finished goods while developing an understanding of supply and demand. Students use the specific content and vocabulary within each book to discuss and examine these big ideas, or Key Concepts. The Theme Set Program is designed for differentiated instruction. Each Theme includes four books written at four different reading levels.