IB ESS SL Notes

Environmental Systems and Societies

Aimnova offers free IB ESS revision notes for the 2024–2029 syllabus, covering all 8 units from Foundations of ESS to Human Systems and Resource Use. Each of the 30+ topics includes concise definitions, diagrams, real-world examples, spaced-repetition flashcards, and IB-style practice questions with AI feedback — no sign-up required to read the notes.

IB Environmental Systems and Societies (ESS) explores the interactions between natural ecosystems and human societies. The course covers environmental systems, biodiversity, energy flows, climate change, resource management, and sustainability — equipping students with a scientific and ethical framework for understanding environmental challenges.

These notes are organised by unit and topic according to the official IB syllabus, helping you revise systematically for Paper 1 and Paper 2. Whether you are preparing for assessments or doing a final review before exams, this structured approach ensures you cover every part of the ESS course efficiently.

What's included

30+ topics across 8 units, aligned to the IB 2024–2029 syllabus
Concise notes with definitions, diagrams, and real-world examples
Spaced-repetition flashcards for every topic
IB-style practice questions with AI marking and feedback
SL and HL coverage with level toggle
Free to access — no account required for notes

How to use ESS notes

1Start with a unit overview. Click any Unit heading to see all topics and key themes for that unit.
2Read micro-topic notes. Each topic links to detailed, exam-aligned notes with definitions, diagrams, and examples.
3Test with flashcards. Every topic has spaced-repetition flashcards to lock key terms into your memory.
4Practise exam questions. Apply what you know with practice questions and get AI feedback on your answers.