Image Item No. Description  2009594  Education Green City Challenge Activity Pack Catalog: Gear: Software: MINDSTORMS: NXT  2000080  Education Mindstorms NXT Software 2.1 (Single License) Catalog: Gear: Software: MINDSTORMS: NXT  5003413  Education Mindstorms NXT Software 2.1 (Site License) Catalog: Gear: Software: MINDSTORMS: NXT