# Lesson 16

Posing Percentage Problems

Let's explore how percentages are used in the news.

### 16.1: Sorting the News

Your teacher will give you a variety of news clippings that include percentages.

1. Sort the clippings into two piles: those that are about increases and those that are about decreases.
2. Were there any clippings that you had trouble deciding which pile they should go in?

### 16.2: Investigating

In the previous activity, you sorted news clippings into two piles.

1. For each pile, choose one example. Draw a diagram that shows how percentages are being used to describe the situation.

1. Increase Example:

2. Decrease Example:

2. For each example, write two questions that you can answer with the given information. Next, find the answers. Explain or show your reasoning.

### 16.3: Displaying the News

1. Choose the example that you find the most interesting. Create a visual display that includes:

• a title that describes the situation
• the news clipping
• your diagram of the situation
• an explanation of how you calculated each answer

2. Examine each display. Write one comment and one question for the group.