IB Biology IA example
Temperature and catalase activity
IB Chemistry IA example
Concentration and rate of reaction
IB Physics IA example
Length of a pendulum and its period
IB Psychology IA example
Reducing exam stress in final-year students
What do the annotations show?
The annotations explain how evidence and reasoning can meet a subject's criterion, then compare a weak excerpt with a stronger one.
What do these worked examples show?
They show how a vague claim becomes auditable: the question or aim is defined, the evidence is visible, the reasoning can be followed, and limitations are tied to the actual work.
Should I copy the structure of an exemplar?
Use official exemplars to see how criteria are applied, not as a structure to copy. Your own structure still has to fit your task, evidence, and assessment session.
Where are the official IB exemplars?
The IB publishes marked exemplars with examiner comments in its Programme Resource Centre. Schools have access, so ask your subject teacher for the pack that matches your assessment session.
Sources & verification
Primary-source references used to verify key assessment facts on this page. Last source check: September 25, 2026.
These are original simulated iBacalao teaching examples, not official exemplars or real student work. Invented figures and scenarios are examples only, not sources for a student's assessment.
- IB — Diploma Programme assessment and examsOfficial overview of criterion-related internal assessment.