What is the cost of Trading?
The item traded away. What is the benefit? The item received in the trade. • Whose original bag or item was “polluted” in some way? How did that affect your original rating? Did you trade the item? Why or why not? How did the fact that it was polluted affect your willingness to trade? Your ability to trade? Anticipate a variety of answers. Some students may disagree about whether an item was polluted or not in the first place. Expect students to react to the pollution differently, some will insist that the pollution greatly reduces the value of the item and others will disagree – “After all, it was only a dirty wrapper.” • Did you try to clean up the item before you traded? Why or why not? Depends both on the original owner’s perception of the pollution and the original owner’s perception of how the pollution will affect others. • If so, how much clean up did you do and why? The owner looked at the cost of clean-up and his or her estimation of how much cleaning would be necessary befor
