True Maps and False Impressions Geography Interactive

True Maps, False Impressions — Interactive Geography Lab
Do Geography Lab • Cartography

True Maps,
False Impressions

Every map leaves something out. The question is not whether a map distorts reality, but what it distorts, why, and with what consequences.

A map can be factually correct and still guide the eye toward a deeply misleading conclusion.

Your task

Change the cartographer’s decisions. Watch what becomes prominent, what disappears, and which perfectly defensible map you would choose for a particular question.

One rule

Do not ask, “Is this map true?” Ask, “True for what purpose—and liable to create what false impression?”

01

Stretch the world

The Mercator projection preserves local direction and shape, which made it invaluable to navigators. Its area distortion, however, grows rapidly toward the poles.

Equal land, unequal appearance

The teal tile remains its true size. The gold tile shows the approximate area inflation on a Mercator map.

0°
45° N
75° N
TRUE
AREA
MAP
AREA
equal-area view
Mercator view
02

Remap one dataset

The imaginary state of Northland has sixteen counties. The underlying population and poverty estimates never change. Your map choices do.

Poverty rate by county

Select a county to inspect both the mapped value and the data hidden by this view.

Choose a county. Notice that every county has both a rate and a number of people—but the map can show only one at a time.
03

Read the map’s argument

A competent reader does not merely decode colors. A competent reader identifies the claim built into the design.

Same counties: rate

Share of residents below the line

Same counties: total

Number of residents below the line

Your current map says…

Final test

A news story claims, “Poverty is primarily a rural problem,” using a map of county poverty rates. What is the strongest cartographic caution?

Original teaching activity inspired by the enduring “do geography” tradition. Data and places are intentionally fictional so the cartographic choices—not memorized facts—remain the object of study.

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