Each group needs:

• LEGO MINDSTORMS EV3 robot, such as EV3 Core Set (5003400) at https://education.lego.com/en-us/products/lego-mindstorms-education-EV3-core-set-/5003400
• LEGO MINDSTORMS Education EV3 Software 1.2.1, free online, you have to register a LEGO account first at https://www.lego.com/en-us/mindstorms/downloads/download-software
• computer, loaded with EV3 1.2.1 software
• 1 rubber band (3-inch diameter)
• 1 rubber band vehicle, pre-built for each group (refer to the Vehicle Building Instructions)
• stopwatch or timer
• Data Collection Worksheet, one per student
• Vehicle Building Instructions
• (optional) talcum powder

Alternative: LEGO MINDSTORMS NXT Set:

Note: This activity can also be conducted with the older (and no longer sold) LEGO MINDSTORMS NXT set instead of EV3; see below for those supplies:

• LEGO MINDSTORMS NXT robot, such as the NXT Base Set 
• LEGO MINDSTORMS Education NXT Software 2.1 
• computer, loaded with NXT 2.1 software