core-econ.org

Yes. CORE Econ describes its ebooks as "free, open access" texts, and its homepage states the project offers "free online textbooks and resources" that are "free to everyone." The site does contain a Stripe payment integration and a "Support CORE" section, but those are donation and support channels, not paywalls. You can read the ebooks without paying.

What "free" covers

The homepage lists the full ebook library as open access, including:

• The Economy 2.0: Microeconomics — described as a "free, open access text" for introductory undergraduate microeconomics
• The Economy 2.0: Macroeconomics — the same for introductory macroeconomics
• Understanding our Economy — a free textbook for beginners and first-year students
• The Economy 1.0 — the original free, open access text for a year-long introductory course
• Doing Economics, Experiencing Economics, CORE Insights, and Economy, Society, and Public Policy
• Multiple translations (Spanish, French, Italian, Finnish, Portuguese, German, Slovak) and adaptations such as The Economy: A South Asian Perspective, all labelled free or open access

So the core teaching material — the ebooks themselves — sits behind no payment step.

What the Stripe link and "Support CORE" section actually are

The page includes a "CORE needs your help" heading and a "Support CORE: Non-US residents" link, and Stripe appears as a payment platform. These are voluntary giving routes for people who want to fund the project. Nothing in the page evidence ties them to accessing an ebook. Paying is optional; reading is not conditional on it.

Registration and extra resources

The homepage says: "Register below to access additional instructor and learner resources." That tells you two things:

1. Some additional resources (aimed at instructors and learners) require an account.
2. The ebooks are presented separately from that registration prompt, as the open-access library.

Registration is not described as paid. The page does not state a price for registered resources, so treat "free to register" as unconfirmed rather than assumed — but there is no evidence of a fee either.

Quick check before you commit

Bottom line

If your concern is cost, CORE Econ's textbooks are free to read and use. The only money-related elements on the homepage are voluntary support options. If you later want instructor or learner extras, you may need to register — check that step directly, since the page does not spell out its terms.

CORE Econ is a free, open-access platform for teaching and learning economics, built around online ebooks that use real-world problems and current research instead of abstract theory alone. It is aimed mainly at introductory undergraduate economics courses, but the ebooks are open to anyone, and registering unlocks additional instructor and learner resources. If you are looking for a textbook you can read online at no stated cost, or you teach an intro course and want ready-made material, CORE Econ is worth checking. If you need a print textbook with a traditional publisher's support package, this is a different model.

What CORE Econ actually is

The site describes itself as the home of The Economy 2.0 and other economics ebooks, offering "free online textbooks and resources for a new way of teaching and learning economics, using the best research to address the world's most pressing problems."

Two things define it:

• Open access. The ebooks are presented as free and open access, not as paid products. The site lists Stripe as a payment platform, which relates to supporting the project rather than buying the textbooks.
• Problem-first teaching. Rather than starting from definitions and models, the material is organized around real economic problems and policy questions.

The main ebooks and resources

The core offering is a set of ebooks, several of which are adaptations of the same base text for different regions and languages.

There are also regional and language adaptations, including The Economy: A South Asian Perspective, La economía 2.0: Microeconomía, L'Économie, L'Économie pour le Lycée, L'economia, La Economía, Talous, A Economia, Die Wirtschaft, and Ekonomika, spoločnosť a verejná politika.

Beyond the ebooks, the site points to complementary material such as S. Bowles and W. Chen, Allocation, Distribution & Policy: Notes, Problems, and Solutions in Microeconomics, described as a problem-based and policy-engaged way to learn microeconomic theory.

Who it suits

• Students in introductory micro or macro courses whose instructor assigns CORE, or self-learners who want a structured, free text.
• Instructors who want open-access teaching material and are willing to register for the additional instructor resources.
• Readers interested in policy rather than pure theory, since several titles are built around policy problems and real data.

It is less suited to someone who wants a short, casual introduction, or who needs extensive printed ancillaries and a commercial support contract.

How to start using it

1. Go to core-econ.org and browse the ebook list.
2. Pick the title matching your course level and region — for example, The Economy 2.0: Microeconomics for an intro micro course.
3. Read online directly; the ebooks are presented as free and open access.
4. Register on the site if you want the additional instructor and learner resources. Registration is the step that unlocks those extras, so treat the base ebooks and the registered resources as two different levels of access.
5. If you teach, look at the complementary titles and the experiments in Experiencing Economics to build out a course.

Points to check before committing

• Language and region. Many titles are adaptations, so confirm you are opening the version that matches your curriculum and language.
• Course fit. CORE's problem-based sequencing differs from conventional textbooks; if your course follows a standard syllabus, map the chapters before assigning.
• What registration adds. The site separates open ebooks from registered instructor and learner resources, so decide early whether you need the latter.

The simplest way to judge CORE Econ is to open one ebook and read a chapter against your own course needs.

Pick by course level and teaching goal: The Economy 2.0: Microeconomics and The Economy 2.0: Macroeconomics are the current free, open-access texts for introductory undergraduate micro and macro courses; Understanding our Economy is written for beginners and first-year students, including two-year and four-year colleges and universities in North America; The Economy 1.0 is the original free open-access text for a year-long introductory undergraduate course; Economy, Society, and Public Policy uses policy problems to motivate learning economic concepts and methods. If you teach in a specific language or region, CORE also publishes translated and adapted editions (for example, a South Asian perspective, French, Spanish, Italian, Finnish, German, Portuguese, and Slovak versions).

Start with the course you are teaching

How the main English options differ

The Economy 2.0 (Microeconomics and Macroeconomics)

This is the split into two semester-friendly books. Use the micro volume for an introductory micro course and the macro volume for an introductory macro course. Both are described as free and open access.

Understanding our Economy

Aim here if your students are beginners or first-years, or if you teach at a two-year or four-year college or university in North America. It is positioned as a free textbook for that audience rather than as the standard undergraduate sequence.

The Economy 1.0

Choose this if you want the original free, open-access text designed for a year-long introductory undergraduate course. It suits a full-year sequence rather than a single-semester micro or macro course.

Economy, Society, and Public Policy

This is the option when your teaching approach starts from policy problems and uses them to motivate the concepts and methods of economics. It is a different entry point from the standard micro/macro split.

Language and regional editions

CORE publishes more than the English core texts. If your course is taught in another language or needs regional examples, check whether one of these matches:

• French: L’Économie (open access, for students of an introduction to economics) and L’Économie pour le Lycée (three interactive, open-access texts for French high school students)
• Spanish: La economía 2.0: Microeconomía (free, open access for introductory undergraduate microeconomics) and La Economía (free, open access for introductory undergraduate courses)
• Italian: L’economia (a free, open-access book for introductory undergraduate courses)
• Finnish: Talous (a free, open-access work for bachelor-level introductory economics courses)
• German: Die Wirtschaft (an openly accessible textbook for foundation courses)
• Portuguese: A Economia (a free, open-access text for introductory undergraduate courses)
• Slovak: Ekonomika, spoločnosť a verejná politika (uses policy problems to motivate teaching of economic concepts and methods)
• South Asia: The Economy: A South Asian Perspective (an adaptation with topics and features specific to South Asian and developing economies)

Supplementary resources, not replacements

CORE also lists resources that complement the ebooks rather than replace them:

• Experiencing Economics — classroom experiments and games to learn economics
• Doing Economics — work through policy problems using real data
• CORE Insights — a free, self-contained educational resource to supplement CORE Econ’s ebooks
• S. Bowles and W. Chen, “Allocation, Distribution & Policy: Notes, Problems, and Solutions in Microeconomics” — a problem-based, policy-engaged way to learn microeconomic theory

Use these alongside your chosen text, not as the main textbook.

Practical check before you commit

1. Confirm the course length: a year-long course points to The Economy 1.0; a single-semester micro or macro course points to the matching Economy 2.0 volume.
2. Confirm the student level: beginners and first-years, especially in North America, match Understanding our Economy.
3. Confirm the teaching approach: if you want policy problems to drive the course, look at Economy, Society, and Public Policy.
4. Confirm the language and region: if you teach outside English or outside the default context, check the translated or adapted edition list above.
5. Register on CORE Econ if you need additional instructor and learner resources; the site notes that registration is how you access those extras.

CORE Econ's site is not just a textbook library. Beyond the ebooks, it lists three named supplementary resources—Experiencing Economics, Doing Economics, and CORE Insights—plus instructor/learner materials unlocked by registering. If you are teaching or self-studying with a CORE ebook and want activities, data work, or short topical readings to go with it, these are the pages to start from.

The three main supplements

Experiencing Economics

This is the classroom-activity arm: experiments and games. Use it when you want students to generate their own data in a session and then reason from what happened, rather than only reading a result. It pairs naturally with an introductory course where a concept is easier to feel than to define.

Doing Economics

This is the applied, data-based supplement. Its stated purpose is working through policy problems using real data, so it suits assignments where students must interpret evidence and connect it to policy, not just recall theory. If your course needs a quantitative or empirical component alongside the text, this is the relevant resource.

CORE Insights

CORE Insights is described as a free, self-contained educational resource that supplements the ebooks. "Self-contained" is the operative word: it can be assigned or read on its own, which makes it useful for background reading, extension material, or topics you want to cover without pulling students through a full chapter.

Instructor and learner resources behind registration

The homepage states that you can register to access additional instructor and learner resources. The public page does not enumerate what those extras contain, so treat registration as the way to find out rather than assuming a specific set of files. Note that the site also carries a "CORE needs your help" section and a "Support CORE: Non-US residents" heading, and Stripe appears as a payment platform—so some forms of support involve payment. That is separate from the free/open-access status of the ebooks and the three supplements above.

Other companion material

The site also lists S. Bowles and W. Chen, "Allocation, Distribution & Policy: Notes, Problems, and Solutions in Microeconomics", described as a problem-based, policy-engaged way to learn microeconomic theory. If you want problem sets with solutions to accompany microeconomics teaching, this is a distinct item from the three named supplements.

How to choose

• Want in-class activities → Experiencing Economics.
• Want data and policy exercises → Doing Economics.
• Want short standalone readings → CORE Insights.
• Want problem sets with solutions for micro → the Bowles and Chen material.
• Want everything instructors get → register, since the extras are gated behind an account.

All of the ebooks themselves are described as free and open access, and the supplements are presented alongside them on the same site, so the practical first step is to open the resource page that matches your need and check whether it assumes a specific ebook as its companion.

CORE Econ teaches introductory economics by starting from real-world problems—inequality, climate change, market power, financial crises—and then building the concepts and methods needed to understand them, rather than beginning with abstract theory and adding applications later. Its ebooks are free and open access, and it publishes separate texts for different course levels and regions. This approach suits instructors who want policy-engaged, research-based teaching materials and learners who want economics connected to current problems; it is less suited to those who want a traditional theory-first sequence or a text tightly mapped to a specific exam syllabus.

Problem-first, not theory-first

The organizing principle is that a pressing real-world question motivates the economics, not the reverse. CORE describes its materials as using "the best research to address the world's most pressing problems," and its Economy, Society, and Public Policy text is explicitly built on "using policy problems to motivate learning the concepts and methods of economics."

In practice this means a unit typically opens with a puzzle or policy dilemma, then introduces the models and data needed to reason about it. The concepts arrive as tools for a question already on the table, which is the opposite of the standard sequence where a model is presented first and applications follow.

Research-based content

CORE states that its teaching draws on current research rather than only on the canonical models of earlier decades. This shows up in how topics are framed—for example, treating institutions, power, and distribution as central rather than peripheral—and in the use of real data throughout the texts.

Real data and policy work

Alongside the ebooks, CORE publishes Doing Economics, described as working "through policy problems using real data." That is a distinct offering from a standard textbook: it is a set of exercises in applying economic reasoning and evidence to concrete policy questions, which complements the conceptual chapters.

A range of ebooks for different levels and regions

CORE is not a single book. The catalogue covers different audiences, so the "different approach" also means choosing the right entry point:

There are also translations and adaptations, including Spanish (La economía 2.0: Microeconomía, La Economía), French (L'Économie, plus L'Économie pour le Lycée for high school), Italian (L'economia), Finnish (Talous), Portuguese (A Economia), German (Die Wirtschaft), and Slovak (Ekonomika, spoločnosť a verejná politika).

Free and open access

CORE's ebooks are free and open access—the site describes them as "free to everyone" and repeats "free, open access" for individual titles. Registration is offered to unlock "additional instructor and learner resources," so the core texts are accessible without it, while some supplementary teaching and learning materials sit behind a registration step.

What this means for choosing it

• Choose CORE if you want an introductory course or self-study path organized around contemporary problems, current research, and real data, and you want the main texts at no cost.
• Look elsewhere if you need a text sequenced strictly by standard theory-first convention, or one aligned to a particular national exam syllabus—though the regional adaptations (South Asian, French high school) may close that gap for some courses.
• Pick the title by level: Understanding our Economy for beginners and North American college students, The Economy 2.0 for standard introductory micro and macro, Economy, Society, and Public Policy if policy problems are your teaching hook, and Doing Economics or Experiencing Economics as companions for data work and classroom experiments.