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Free course series · 9 chapters

Prealgebra

Complete lessons ranging from number systems and algebraic language to equations, graphs, polynomials, and trigonometry, with examples, exercises, and answers.

Course chapters

Each chapter contains the complete English source material. Follow the chapters in sequence or jump directly to the topic you need.

Introductory Algebra, © 2021 Izabela Mazur.

Contributors: Lynn Marecek, MaryAnne Anthony-Smith, Andrea Honeycutt Mathis, and OpenStax. Publisher: BCcampus.

Source work · License: CC BY 4.0

Platform treatment of CC BY 4.0 source material

In this adaptation, the work has been translated into Turkish and restructured for the web; changes and additions have been made to topic sequence, explanations, notation, examples, figures, and visual presentation.

No endorsement by the original authors or publisher is implied.

The source work’s text and other elements are used under CC BY 4.0 unless separately stated. Third-party images carrying separate attribution or licensing remain subject to their own licenses and terms.

Unless otherwise stated, the Turkish translation, original teaching and explanations, solution presentation, editing, and original visual presentation owned by Turan Arıcan are © 2026 Turan Arıcan and licensed under CC BY-NC-ND 4.0.

This license applies only to the Turan Arıcan contributions identified above. The licenses of the source work and third-party material remain in force. Written permission is required for commercial use or distribution of a modified version of those contributions.

Chapter sources and special image attributions

The chapter mapping was derived from the end-of-section attributions in the archived incalg.html file. The list is collapsed so it does not interrupt the lessons.

Show chapter sources and special image attributions

Chapter sources

  • Sections sourced from Elementary Algebra: 1.1, 1.4–1.5, 2.1–2.5, 3.1, the Chapter 5 introduction, 5.5–5.8, the Chapter 6 introduction, 6.1–6.7, 7.2–7.5, and 8.3–8.6.
  • Sections sourced from Prealgebra: 1.2–1.3, the Chapter 3 introduction, 3.2–3.4, 4.1–4.4, 5.1–5.4, 7.1, 8.1–8.2, and 9.1.

Special image attributions

These third-party images retain their own source, attribution, and license status; they are not part of Turan Arıcan’s contributions under CC BY-NC-ND 4.0.

  • 1.2 Use the Language of Algebra: Image adapted from Bernard Goldbach’s work on Wikimedia Commons.
  • Chapter 3 introduction: Calatrava fantasy — Bert Kaufmann, CC BY 2.0.
  • 4.2 Understand Percent: Photo: Riles32807, Wikimedia Commons — public domain.
  • 4.4 Solve General Applications of Percent: Image: Marta Oraniewicz.
  • Chapter 5 introduction: Photo: paurian, Flickr.
  • Chapter 6 introduction: Image/graph source: Steve Jurvetson, Flickr.

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Disclaimer

These lessons are provided for general educational purposes. They are not guaranteed to be error-free, to satisfy every requirement of a particular examination or curriculum, or to be sufficient on their own for an individual learner’s needs. Official sources and teacher guidance should also be considered when making important academic decisions.