This TERRIFIC Smartboard-Slides-Lesson on Solving-Problems-with-Proportions has 20-slides that include a warmup, definition of proportion, identifying-proportions, using equivalent-ratios to solve-proportions, looking for left to right relationship, simplifying first ratio, then, solving-proportions with cross products, along with using unit rates to solve-proportions. Includes word problems as well. You'll love using this great resource year after year!WARNING: You MUST have SMART Technologies