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## How much of what we see is advertising?

How much of what we see is advertising? Everywhere we turn, we’re bombarded by someone trying to sell us something. From Times Square to Facebook, ads are everywhere.

Students decompose irregular polygons into triangles and rectangles, find their areas to estimate the fraction of a scene that’s advertising, and discuss the pros and cons of living in an ad-free world.

### REAL WORLD TAKEAWAYS

• A significant portion of our real and virtual worlds is advertising, only some of which we readily identify as such.
• The amount and kinds of advertising we see influences what we think we want.
• There are both positive and negative consequences of trying to reduce the prevalence of advertising in our worlds.

### MATH OBJECTIVES

• Find the area of irregular shapes by decomposing them into rectangles and/or triangles
• Calculate the area of rectangles and triangles

Appropriate most times as students are developing conceptual understanding.