Lesson objective: Use percents to compare relationships based on different totals in a real-world context.

This lesson provides an opportunity for students to apply their knowledge and understanding of percents to a real-life situation. Students are asked to calculate and compare individualized percent daily values based on the consumption of certain portions of milk.

Key Concept students will use:

- Percent is a way to compare relationships that are not based on the same whole by standardizing each comparison to 100.

Skills students will use:

- Proportional reasoning (Grade 7, Unit 2)
- Using double number lines to find percent values

Students engage in Mathematical Practice 2 (Reason abstractly and quantitatively) as they make sense of the quantities and their relationships that are involved in completing this task.

**Key vocabulary: **

- double number line
- percent
- ratio