Each class 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
• 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
• Example EV3 Robot Line-Follow Program, for the teacher to use to program the robot
• whiteboard and dry erase pens (or the classroom board and chalk)
• colored tape, to create the outlines of three shapes on the floor (rectangle, square, triangle); it is best if the tape color is high-contrast to the floor color, such as dark tape on light floor or light tape on dark floor
• ruler or yardstick
• Fence That Farmland Pre-Quiz, one per student
• Fence That Farmland Post-Quiz, one per student

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
• Example NXT Robot Line-Follow Program, for the teacher to use to program the robot