🧪 Runoff Model Moves

Students revisit splash lab evidence and practice one testing routine for tray models using cups of water, sand, gravel, soil, rocks, and small native plant samples or paper plant markers. The teacher models how to watch water speed, notice muddy water, and record results with arrows, pictures, and labels. Pairs rehearse using key words such as runoff, soak, slow, and cleaner right before building.