🪺 Build Test Revise Blitz

Teams use a limited material kit such as twigs, yarn, paper strips, grass, tape, and string to build a starter nest that can hold a model egg or small weight. They run wind, weight, and shake tests, record one failure point and one success, then make one rapid redesign before a short share-out. The teacher closes by naming the essential question and the design challenge criteria of strength, safety, and comfort.