K nex 77051 288 piece exploring wind water energy set for 2 to 3 students k nex 77051 the k nex 77051 exploring wind amp water energy set allows students to experiment with wind and water power students will investigate the science behind these energy sources and the technologies that help to make them useful p p the set makes 7 different wind and water powered models one at a time and contains 288 k nex parts sufficient for 2 to 3 students working in small groups p k nex 77051 e