This subunit consists of 5 activities. The order and flow of activities are presented below. The activities are created in this way that they offer a complete learning cycle.
| File ID | Activity Name | Inquiry Type | E-emphasis |
| XVi.1.1 | Can we use sound to "see"? | Guided discovery Guided inquiry |
1. Engagement |
| XVi.1.2 | Do muscle, fat and bone sound the same? | Guided discovery Guided inquiry Bounded inquiry |
1.2.1. Engagement 2.2&2.3. Explanation 2.4. Elaboration 2.5. Evaluation |
| XVi.1.3 | Make an A-scan | Guided discovery | 3.1. Engagement/ Exploration 3.2. Explanation 3.3. Elaboration/ Evaluation |
| XVi.1.4 | Make a B-scan | Guided inquiry | 3.1. Engagement/ Exploration 3.2. Explanation 3.3. Elaboration/ Evaluation |
| XVi.1.5 | Ultrasound imaging | Guided inquiry Open inquiry |
5.1. Engagement/ Exploration 5.2. Explanation 5.3. Elaboration/ Evaluation |