In this section, students work with real-world examples of percent increase and decrease. Some applications of percent increase include sales tax, tips, interest, and markup. Applications of percent decrease include discounts, depreciation, and commission. However, it is not necessary for students to memorize the meanings of these terms. The goal is for students to be able to write equations and...

In this final section, students have the opportunity to apply their thinking from throughout the unit. As this is a short section followed by an End-of-Unit Assessment, there are no section goals or checkpoint questions.

In this section, students work with percent increase and decrease. First they interpret verbal descriptions and diagrams. They find the new amount after being given the initial amount and the percentage of the increase or decrease. Then students create their own diagrams and solve problems where the final amount is known but the initial amount or the percentage of the...

In this section, students work with proportional relationships that involve fractional values. First they investigate scaled copies where the side lengths include fractions. Then students solve problems involving constant rates between fractional quantities. They use tables to make sense of proportional situations and solve for unknown values.

This section also helps prepare students for learning about percent increase and decrease....