This product includes a 16-page foldable with interactive practice of the following concepts: the percent proportion, percent of change, discount and sale price, and sales tax and total price. A 56-page PowerPoint accompanies the foldable with slides to develop understanding and slides that are answer keys for the foldable . Also included are two graphic organizers that assist in the development of understanding of the interactive relationships of the concepts of discount, sale price, sales tax, and total price. The graphic organizers are integral parts of the foldable and the PowerPoint Presentation. The product is aligned to Common Core Standards for seventh grade math. The product is by Mathink.