In one embodiment a device is provided for visually demonstrating stagger.
In this embodiment, the device includes first and second tires coaxially
mounted on an axle, wherein the first tire has a smaller diameter than
the second tire. The device also includes a member configured to be
pushed or pulled by a person. The device may be pushed or pulled on a
flat surface, such as a paved road. When the device is pushed or pulled
in a forward direction, the first and second tires will rotate at the
same rotational speed, but because the second tire has a larger diameter
than the first tire, the second tire will travel a greater distance than
the first tire during each tire rotation. Thus, the device will move in a
curved path.