This lesson teaches students about solving percent problems using models such as ratio tables, tape diagrams, and double number line diagrams. It contains two exploratory challenges that involve making predictions about claims related to percent discounts and working through examples. The first claim is that to find 10% of a number you move the decimal place once to the left, while the second claim is that taking successive discounts on a price is equivalent to taking the total discount from the original price. Students are asked to use models to solve percent problems and determine if the claims are true or false based on their work.