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School subjects, explained clearly

Sourced reference pages for students in grades 3–6 and the grown-ups helping them. Each page has a one-minute summary, a timeline, key words and printable questions.

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Filter by grade band. Pages from the original KidInfo directory are being rewritten one at a time; old links redirect here once each new page is approved.

Large woodcut world map printed in twelve sheets, showing Europe, Africa and Asia with a narrow new landmass to the west labeled America.

Grades 3–6

The Age of Exploration

Why European sailors crossed the Atlantic, who they met, what the Columbian Exchange changed, and how to think carefully about the word "discovery." For grades 3–6.

Painting of the Continental Congress in a paneled room: a committee of five men stands at a table presenting the draft Declaration of Independence while seated delegates watch.

Grades 3–6

The American Revolution

Why 13 British colonies broke away, the key events from 1763 to 1783, and the people whose stories are often left out. Written for grades 3–6.

Black-and-white photograph of a low-ceilinged colonial kitchen with heavy wooden beams, a large brick hearth, and shelves holding plates and pewter.

Grades 3–6

Life in Colonial America

What daily life was like in the 13 British colonies: homes, work, school, food and faith by region, plus the lives of enslaved people, indentured servants and Indigenous neighbors.

Black-and-white photograph of a young girl in an apron standing barefoot between two long rows of spinning machines in a cotton mill.

Grades 3–6

The Industrial Revolution in the United States

How factories, machines, railroads and the telegraph changed American life in the 1800s, and what it meant for workers, children, immigrants and enslaved people.

Watercolor of the Algonquian town of Secotan on the North Carolina coast: bark-covered longhouses along a path, fields of corn, a central fire and people gathered in a circle.

Grades 3–6

Indigenous Nations of North America

An introduction to the many distinct Native nations of what is now the United States: their governments, trade and farming, the effects of colonization, and tribal sovereignty today.

Black-and-white photograph of a dark weathered timber-frame house with a steep roof, a central brick chimney and later side additions, surrounded by bare trees.

Grades 3–6

The New England Colonies

Massachusetts, Connecticut, Rhode Island and New Hampshire: geography, Puritan life, town meetings, trade, and the Native nations whose homelands the colonies were built on.

Sepia photograph of a family posed in front of a house built from blocks of sod cut into a hillside, with horses, a table and a cow standing on the grassy roof.

Grades 4–6

Westward Expansion and the Pioneer Era

How the United States grew west from 1803 to 1890, seen through pioneers, Native nations, Mexican Americans, Black homesteaders and Chinese railroad workers.

By subject

Subjects

American history

From Indigenous nations and colonial life to the Revolution, industry and westward expansion.

World history

Ancient civilizations and world history.

Pages in research

Geography

Maps, the United States and the world.

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Science

Animals, weather, earth and space.

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Language arts

Grammar, writing and reading skills.

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Math

Number sense and problem solving.

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