🛠️ Hydroponic Fix and Retest

Teams make their chosen change to the hydroponic system using cups, lids, cotton or sponge supports, labels, and teacher-portioned water. Children then retest with the same checklist used before: plant upright, roots touching water, no major spill, and safe tool use. Each team gives feedback to 2 peers, receives feedback, and revises one small part before a quick second check.