Each group needs:

• ruler, for measuring in metric units
• LEGO MINDSTORMS robot wheel (of any size)
• piece of masking tape, ~25 cm long
• sheet of 8.5-in x 11-in (or A4) paper
• scissors
• 2 pencils
• Wheels Quiz, two per student

To share with the entire class:

• 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 (instructions to build and program a basic robot are included with the robot kit; the kit is highly reusable) (Note: Using this LEGO system makes it easy to remove wheels and investigate them independent of the vehicle, and then re-install them for making circumference measurements.)
• chalk or whiteboard markers for the classroom board

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