Activity 01
Stations Rotation: Sampling Techniques
Prepare four stations with maps or models: random (dice rolls for points), systematic (grid transects), stratified (proportional zones), opportunistic (expert picks). Groups visit each for 7 minutes, apply to a river site model, and note pros/cons in tables. Debrief as a class.
Explain the importance of sampling techniques in collecting reliable fieldwork data.
Facilitation TipFor the Station Rotation, set up four labeled zones with one sampling method per table and a short task card that forces students to apply the method to a real scenario.
What to look forProvide students with a scenario: 'Investigate the gradient of a slope in a local park.' Ask them to write down the type of sampling they would use, one primary data collection method, and one secondary data source they might consult. Review responses for understanding of method selection.