This subunit is meant for higher levels of secondary education. The main IBSE approaches employed in this subunit are interactive demonstration, guided discovery and guided inquiry. Inquiry based skills developed in these subunits are amongst others:
- Designing experiment
- Planning scientific investigations
- Using tools and techniques to gather data
- Analysing and describing data
- Explaining results and drawing conclusions.
- Constructing models
- Comparing models with experimental results
- Debating with peers
- Forming coherent arguments
- Communication scientific procedure and explanations.
The activity 5 in the subunit X-ray imaging is an open inquiry type of activity. Students have to collect the evidence, construct their logical proofs and defend their point of view in a class debate.