For the modeling task, You may wish to provide string, a disposible cup, tape, an unsharpened pencil, a measuring tape, a paperclip, and a binderclip. The binderclip should have enough mass to simulate the swing and rider. To collect good evidence, students may need to be reminded of the method for calculating speed.
A related phenomenon would be runners racing on a circular track.
What do you know about amusement park swing rides?
Why did you agree most with that friend?
What other examples do you know of that are similar to this problem?
Did your thinking change after discussing the problem with your group? Explain.
