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; the LEGO MINDSTORMS EV3 Intelligent Brick, 1 touch sensor, 4 cables to connect the touch sensors to the EV3 brick, and additional LEGO parts are used from this kit
• 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
• 3 additional touch sensors (for total a of 4 touch sensors, including the one in the core set), available for $21.99 each at https://shop.lego.com/en-US/EV3-Touch-Sensor-45507
• (optional) assorted materials to aid creating unique sensory attachments, in addition to the LEGO kit parts and pieces, such as tape, cotton balls, rubber bands, sandpaper strips
• Pre-Activity Worksheet, one per student
• Activity Datasheet, one per student
• Post-Activity Worksheet or Scaled-Up Post-Activity Worksheet, one per student

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
• computer loaded with the NXT 2.1 software