Learning objective
Explain how current direction relates to a model structure and record observations.
Materials
Shallow tray, paper barrier, safe floating objects, ruler, towel.
Learning sequence
- Predict flow when the barrier orientation changes.
- Test two orientations, repeating each three times.
- Compare observations and state limits of the sea analogy.
Evidence and assessment
Three-trial table, current sketch and two-sentence reflection.
Safety and ethics
Shallow tabletop water tests under supervision only.