Quick answer
Christos Math is the free IB Mathematics resource site created by Christos Nikolaidis. It currently provides separate Mathematics: Analysis and Approaches (AA) and Mathematics: Applications and Interpretation (AI) sections with lecture notes, formula booklets, exercises, tests and 2026 mock-exam resources for SL and HL.
About This Resource
The site organises both IB mathematics courses around the five syllabus topics and separates SL/HL or HL-only material where relevant. Many exercise sets include solutions, while test pages distinguish newer AA/AI material from resources written for the pre-2019 courses. It is an independent teacher-created resource rather than an official IB service, so students should still confirm syllabus and assessment requirements with current IB or school materials.
Last reviewed by StudyIB on 21 July 2026. External features and availability can change.
Continue with your StudyIB course and Question Bank
Use the external resource to clarify a concept, then return to the exact course and level you study for syllabus-organised revision and independent question practice.
Resource Type
Study Notes
Time to explore: 12 min read
Disclaimer
This resource is independently operated and is not officially endorsed by the International Baccalaureate Organization (IBO) or other exam boards unless stated otherwise. As with any revision tool, it should be used in addition to the official syllabus, textbooks, past papers, and teacher instruction — not as a sole resource. Always check for current syllabus version and assessment updates before relying on any online materials.
Sources and common questions
What does the Christos Math website cover?
It provides separate resources for IB Mathematics AA and AI, including lecture notes, formula booklets, exercises, tests, HL Paper 3 practice and mock-exam material. Available items differ by course and level.
Are Christos Nikolaidis IB Math notes free?
The current lecture-note and test pages state that their documents are free to access. Students should check the source page for the latest access terms and file availability.
Is Christos Math an official IB website?
No. It is an independent teacher-created mathematics resource. Use current IB documentation and school guidance as the authority for syllabus and assessment requirements.
How should I use Christos Math for IB exam revision?
Select the exact AA or AI course and level, review one weak concept, attempt the linked questions without help, check the solution, record the error and then repeat the skill under timed conditions.
Notes
How to use this resource
- Choose AA or AI and your exact level before downloading material; do not mix similarly named course sections.
- Use lecture notes to repair one concept, then complete the matching exercise without opening the solution first.
- Prioritise material labelled for the current AA/AI courses and ask your teacher before using pre-2019 tests for exam-format practice.