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NotesESS HLUnit 1
IB ESS HL · Unit 1 of 8

Unit 1: Foundations of ESS

Unit 1 of IB Environmental Systems and Societies covers Foundations of ESS. This unit contains 4 topics and 16 sub-topics. Below you'll find free study notes, flashcards, and exam preparation resources for every topic in this unit.

4 topics16 sub-topics
ESS FlashcardsExam technique guide

What Unit 1 covers

The HL treatment of Unit 1 deepens the foundational ESS frameworks with more rigorous analysis of environmental value systems, advanced systems modelling, quantitative feedback loop evaluation, and detailed sustainability metrics. HL students must demonstrate stronger analytical and evaluative skills from the outset.

Topics in Unit 1

1.1

Environmental systems

5 sub-topics

1.2

Models, Systems and Loops

4 sub-topics

1.3

Equilibrium, stability and resilience

2 sub-topics

1.4

Sustainability

5 sub-topics

Study tip: Work through the topics in order — each builds on concepts from the one before. Start with notes, then reinforce with flashcards and practice questions.

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All ESS HL unitsUnit 2