MassachusettsHISTORY EXPLORERS GRADES 3–8
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evidence
Information from a source that helps us test a claim.
source
A document, object, image, or account we can examine.
inference
An explanation based on clues; it still needs checking.
migration
Moving from one place to another to live.
immigrant
A person who moves to another country to live.
estimate
An approximate amount, based on available information.
oral history
A recorded interview about someone’s memories and experiences.
community
People connected by a place, relationships, or shared activities.
ancestry
Family origins across generations.
primary source
Evidence created by someone who experienced a time or event.

The Massachusetts atlas

Filter real maps and map collections by subject, place, and period. Compare what each map shows—and what it leaves out.

A map for every question

A political map shows boundaries. A physical map shows land and water. An old map shows what its maker knew, chose, or wanted others to believe.

Start with our built-in maps, then explore the catalog below. Collections lead to many more maps held by libraries and public agencies. The 1500s examples show a broader region before Massachusetts existed as a colony or state. Modern maps in the 2000s category include the twenty-first century.

Open the interactive map room →
Massachusetts: places in our historyAtlantic OceanMASSACHUSETTS123456N050 km*

Mapmaker’s questions

Who made this map, when, and for whom? What scale or projection does it use? Do its boundaries describe the time shown or a later interpretation? Compare a map with a second source.

Showing 12 of 82 resources

Official county index map, including cities and towns.
Official county index map, including cities and towns.MassGIS / Commonwealth of Massachusetts Image source ↗
political

Counties

statewide · 2000s

Counties group towns and cities. Find Dukes County and compare it with Berkshire County.

A question to investigate

How can a county include several islands?

Dig deeper · grades 6–8

Compare the map’s creator, date, purpose, scale, and missing information with a second map. Explain what changed and what stayed connected.

Open the interactive map ↗
Official statewide town-boundary sample map, with an inset illustrating survey boundaries.
Official statewide town-boundary sample map, with an inset illustrating survey boundaries.MassGIS / Commonwealth of Massachusetts Image source ↗
political

Cities and towns

statewide · 2000s

Explore the boundaries of Massachusetts cities and towns.

A question to investigate

Which towns touch your town?

Dig deeper · grades 6–8

Compare the map’s creator, date, purpose, scale, and missing information with a second map. Explain what changed and what stayed connected.

Open the interactive map ↗
Official statewide map of Massachusetts House legislative districts adopted in 2021.
Official statewide map of Massachusetts House legislative districts adopted in 2021.MassGIS / Commonwealth of Massachusetts Image source ↗
political

Massachusetts House districts

statewide · 2000s

Compare State House election districts with town borders.

A question to investigate

Does each district follow town lines?

Dig deeper · grades 6–8

Compare the map’s creator, date, purpose, scale, and missing information with a second map. Explain what changed and what stayed connected.

Open the interactive map ↗
Official statewide map of Massachusetts Senate legislative districts adopted in 2021.
Official statewide map of Massachusetts Senate legislative districts adopted in 2021.MassGIS / Commonwealth of Massachusetts Image source ↗
political

Massachusetts Senate districts

statewide · 2000s

See how communities are grouped into State Senate districts.

A question to investigate

How do these districts differ from House districts?

Dig deeper · grades 6–8

Compare the map’s creator, date, purpose, scale, and missing information with a second map. Explain what changed and what stayed connected.

Open the interactive map ↗
Official Massachusetts map for the 118th Congressional districts.
Official Massachusetts map for the 118th Congressional districts.MassGIS / Commonwealth of Massachusetts Image source ↗
political

U.S. Congressional districts — 118th Congress

statewide · 2000s

Explore Massachusetts districts for the U.S. House of Representatives.

A question to investigate

Why might districts cover different amounts of land?

Dig deeper · grades 6–8

Compare the map’s creator, date, purpose, scale, and missing information with a second map. Explain what changed and what stayed connected.

Open the interactive map ↗
Official Acton example showing 2022 House district boundaries, precincts, and Subprecinct 6A.
Official Acton example showing 2022 House district boundaries, precincts, and Subprecinct 6A.MassGIS / Commonwealth of Massachusetts Image source ↗
political

Election subprecincts

statewide · 2000s

Zoom in to see smaller areas used to organize voting districts.

A question to investigate

How can one precinct contain more than one election district?

Dig deeper · grades 6–8

Compare the map’s creator, date, purpose, scale, and missing information with a second map. Explain what changed and what stayed connected.

Open the interactive map ↗
Official statewide map of major watershed boundaries.
Official statewide map of major watershed boundaries.MassGIS / Commonwealth of Massachusetts Image source ↗
physical

Major watersheds

statewide · 2000s

Trace areas where rainwater flows toward the same river or coast.

A question to investigate

Can a watershed cross a state border?

Dig deeper · grades 6–8

Compare the map’s creator, date, purpose, scale, and missing information with a second map. Explain what changed and what stayed connected.

Explore the official source ↗
Official local sample of MassDEP hydrography, with the original water-feature legend.
Official local sample of MassDEP hydrography, with the original water-feature legend.MassGIS / Commonwealth of Massachusetts Image source ↗
physical

Rivers, streams, lakes, and ponds

statewide · 2000s

Follow waterways through towns and across the state.

A question to investigate

Which river carries water away from your area?

Dig deeper · grades 6–8

Compare the map’s creator, date, purpose, scale, and missing information with a second map. Explain what changed and what stayed connected.

Open the interactive map ↗
Official local sample of USGS 1:24,000 surficial geology, with the original geology legend.
Official local sample of USGS 1:24,000 surficial geology, with the original geology legend.MassGIS / Commonwealth of Massachusetts Image source ↗
physical

Surficial geology — clues left by glaciers

statewide · 2000s

Study the sand, gravel, and other materials near the ground surface.

A question to investigate

Where might moving ice have left different materials?

Dig deeper · grades 6–8

Compare the map’s creator, date, purpose, scale, and missing information with a second map. Explain what changed and what stayed connected.

Open the interactive map ↗
Official statewide lidar-derived digital elevation model and shaded-relief sample.
Official statewide lidar-derived digital elevation model and shaded-relief sample.MassGIS / Commonwealth of Massachusetts Image source ↗
physical

Hills, valleys, and terrain

statewide · 2000s

A shaded relief layer makes high and low land easier to spot.

A question to investigate

How does western Massachusetts look different from Cape Cod?

Dig deeper · grades 6–8

Compare the map’s creator, date, purpose, scale, and missing information with a second map. Explain what changed and what stayed connected.

Open the interactive map ↗
Official statewide coastline map at 1:25,000 source scale.
Official statewide coastline map at 1:25,000 source scale.MassGIS / Commonwealth of Massachusetts Image source ↗
physical

Massachusetts coastline

statewide · 2000s

Examine the edges of the mainland, Cape Cod, and offshore islands.

A question to investigate

Which coast has the most bays and inlets?

Dig deeper · grades 6–8

Compare the map’s creator, date, purpose, scale, and missing information with a second map. Explain what changed and what stayed connected.

Explore the official source ↗
Official paired local wetland map samples with the original wetland legend.
Official paired local wetland map samples with the original wetland legend.MassGIS / Commonwealth of Massachusetts Image source ↗
physical

Wetlands mapped from 2005 imagery

statewide · 2000s

Locate mapped marshes, swamps, and other wetland areas.

A question to investigate

How do wetlands connect land and water?

Dig deeper · grades 6–8

Compare the map’s creator, date, purpose, scale, and missing information with a second map. Explain what changed and what stayed connected.

Open the interactive map ↗

Sources checked September 23, 2026. Open the source for current programs, hours, access, and map updates. Historical maps may contain outdated language or incomplete representations of Native homelands.

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