What is the C3 Framework?

The College, Career, and Civic Life Framework for social studies, published by the National Council for the Social Studies in 2013. Its Inquiry Arc has four dimensions: developing questions and planning inquiries; applying concepts and tools from civics, economics, geography and history; evaluating sources and using evidence; and communicating conclusions and taking informed action.

What is the Inquiry Design Model?

A one-page blueprint for a social studies unit from C3 Teachers. It has a compelling question, a staging activity, supporting questions, formative tasks with featured sources, a summative argument, and a step for taking informed action.

How do you teach kids to analyze a primary source?

The Library of Congress tool uses three columns: Observe (what do you see?), Reflect (what do you think it means?) and Question (what do you want to know?), in any order. For older students, the Reading Like a Historian lessons add sourcing, contextualizing, corroborating and close reading.

What are the National Geography Standards?

Geography for Life, first published in 1994 and revised in 2012, sets 18 standards under six essential elements: the world in spatial terms, places and regions, physical systems, human systems, environment and society, and the uses of geography.

Inquiry-based social studies

Also called the C3 Framework, the Inquiry Design Model, IDM, document-based history, Reading Like a Historian.

Ages Ages 5 to 18, strongest from about 3rd grade upGrades K–12Planning A plan you adaptScreens Some screen timeShelf Science, history and other subjectsUpdated November 2026

Inquiry-based social studies starts each unit with a question worth arguing about, then has students answer it with evidence: letters, photographs, maps, data and other primary sources. It is the approach of the C3 Framework, which the National Council for the Social Studies published in 2013, and of its unit planner, the Inquiry Design Model. History, civics, geography and economics all work this way. It suits teachers and parents who want children to think like historians and citizens, weighing sources rather than memorizing a textbook, and who will make sure they also learn the facts the sources assume.

1 Where it came from

The National Council for the Social Studies published the College, Career, and Civic Life (C3) Framework in 2013 to guide state standards. Teachers at C3 Teachers built the Inquiry Design Model, a one-page blueprint for a unit, to put it into practice. Document-based history has its own line: the Stanford History Education Group, now the Digital Inquiry Group, wrote the free Reading Like a Historian lessons, and the Library of Congress publishes guides for analyzing primary sources with students.

2 The big ideas

Start with a question. A compelling question, one with no single right answer, gives the unit its purpose.
Use the tools of four disciplines. Civics, economics, geography and history each bring their own concepts and methods.
Evaluate sources, use evidence. Students ask who made a source, when and why, and check it against others.
Communicate and act. An inquiry ends with an argument, and often with a small, informed action.

3 What a lesson looks like

An upper-elementary class gets the compelling question "Can you have freedom without bravery?" on the board. The staging activity is a short talk about a time someone was brave. Then the class splits the big question into supporting questions, one per day or two, each with a small set of featured sources: a letter, a photograph, a map, a short table of numbers. For each source, students use the Library of Congress method: a sheet with three columns, Observe, Reflect and Question, filled in any order. "I see a crowd. I think they are angry. I wonder who took the photo." Each supporting question ends in a quick written task. At the end of the unit every student writes or presents an argument that answers the compelling question with evidence from at least two sources. The last step is taking informed action, such as a poster for the hallway or a letter to the school, kept within the class. In high school the same shape appears in a Reading Like a Historian lesson: one historical question, a few adapted documents, and practice in sourcing, contextualizing, corroborating and close reading.

4 Reading and math

Inquiry leans hard on reading. Sources are often adapted and shortened for younger students, and the Reading Like a Historian study below found reading comprehension gains alongside history gains. Math enters through maps, timelines and simple data tables.

5 The adult's job

The adult chooses the question and the sources, which is most of the work, and trims documents to what students can read. During the unit the teacher models how to read a source ("Who wrote this? Why?"), runs discussions and keeps students tied to evidence. Free, ready-made inquiries from C3 Teachers and free lessons from the Digital Inquiry Group cut the planning a great deal.

6 How progress is checked

Students are judged on the argument at the end: does it answer the question, use evidence from sources, and deal with a source that points the other way? Formative tasks along the way check one skill at a time. Many states also test civics: a 2024 Hoover review counts 19 states requiring a half-year civics course plus a test and 5 requiring a full-year course plus a test, often modeled on the US citizenship test, though Hoover's own summary gives different counts depending on whether students must pass.

7 Strengths and criticisms

Strengths

Students practice skills they will use as adults: weighing a source, spotting who made it and why, and building an argument from evidence.
Every unit has a clear end product, the argument, so it is plain what students have learned to do.
Plenty of high-quality material is free, including the Library of Congress collections, C3 Teachers inquiries and the Digital Inquiry Group's lessons.
It works across history, civics, geography and economics with one routine.

Criticisms and watch-outs

Inquiry needs background knowledge. Knowledge-first advocates argue that students cannot weigh sources about events they know nothing about, so plan for direct teaching of the facts as well.
Primary sources are hard to read. Without adapted versions, young students can spend the lesson decoding rather than thinking.
Choosing sources means choosing what students see. Pick a balanced set, and keep civics lessons nonpartisan.
Units take time, so less ground is covered than with a survey textbook.

8 What the research says

The clearest study is of document-based history. Reisman's 2012 quasi-experiment followed 236 11th graders in five San Francisco schools using Reading Like a Historian lessons and found significant effects on historical thinking, factual knowledge and reading comprehension. That is one study, at one grade, and not a randomized trial. For the C3 Framework and the Inquiry Design Model as a whole, this guide found descriptions and adoption but no outcome studies. Knowledge-first researchers point instead to the Core Knowledge lottery study, which found reading gains from a content-rich sequence; the two approaches can be combined.

9 How to try it

Choose one question with more than one fair answer, such as "Was the railroad good for everyone?" or "Why did people build their town by this river?"
Find three or four short sources: an old photograph, a map, a few lines from a letter, a chart. The Library of Congress has many in the public domain.
For each source, fold a page into three columns: I see, I think, I wonder. Fill them in together.
Ask the child to answer the big question out loud, starting with "I think... because the source shows..."
Finish with something small and real: a poster, a drawing for the fridge, a map of your own street.

10 Using Peabody with it

Free history and social studies websitesOur list of free sites, including primary-source collections, for finding documents for an inquiry.
The three branches of government (4th grade passage)A short, leveled civics passage with questions, useful as background knowledge before an inquiry.
Planet: the 3D globeCountries, rivers, mountains, climate and cities on a globe a child can spin, for the geography side of a question.
US states quizA quick game for learning where the states are, which inquiries about US history and civics often assume.
Map project rubricA printable rubric for a geography product at the end of a unit. Peabody does not yet offer ready-made inquiries or source sets.

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11 Programs that follow it

Programs and materials often named with this approach: C3 Teachers inquiries (Inquiry Design Model), Reading Like a Historian (Digital Inquiry Group), Library of Congress Primary Source Analysis Tool, Geography for Life (National Geography Standards).

Questions people ask

What is the C3 Framework?: The College, Career, and Civic Life Framework for social studies, published by the National Council for the Social Studies in 2013. Its Inquiry Arc has four dimensions: developing questions and planning inquiries; applying concepts and tools from civics, economics, geography and history; evaluating sources and using evidence; and communicating conclusions and taking informed action.
What is the Inquiry Design Model?: A one-page blueprint for a social studies unit from C3 Teachers. It has a compelling question, a staging activity, supporting questions, formative tasks with featured sources, a summative argument, and a step for taking informed action.
How do you teach kids to analyze a primary source?: The Library of Congress tool uses three columns: Observe (what do you see?), Reflect (what do you think it means?) and Question (what do you want to know?), in any order. For older students, the Reading Like a Historian lessons add sourcing, contextualizing, corroborating and close reading.
What are the National Geography Standards?: Geography for Life, first published in 1994 and revised in 2012, sets 18 standards under six essential elements: the world in spatial terms, places and regions, physical systems, human systems, environment and society, and the uses of geography.

Sources

C3 Framework and Inquiry-Based Learning, Nebraska Department of Education.
Inquiry Design Model, C3 Teachers.
History Lessons, Digital Inquiry Group.
Reisman's Reading Like a Historian study (dissertation record), Stanford Digital Repository (2012).
National Geography Standards, National Council for Geographic Education.

Chronological history: History taught as one story in time order, from the ancient world to today, usually through narrative books, maps and a timeline.
Project-based learning: Students spend weeks answering a real question or solving a real problem, and finish by showing what they made to an audience.
Core Knowledge: A free, grade-by-grade list of the history, science, literature and art every child should meet, so knowledge builds year on year.
Phenomena-based science: Science that starts with something puzzling to explain, so children ask questions, investigate and argue from evidence before they get the answer.
Knowledge-building English: Reading and writing organized around weeks-long topics in science, history and the arts, so children build the knowledge and words comprehension depends on.
Every approach in the curriculum guide

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