The elements of a contract and its consequences.

Discuss the elements of a contract and its consequences.
Discuss the discharge of a contract and its effects on the parties.
Discuss the types of contract remedies. Give these two examples a try:
John walks into a gas station, puts one dollar down on the counter, and says, “a coke please.” Under contract law, what has just occurred?
John walks into a gas station, puts one dollar down on the counter, and says, "a coke please." The owner takes the dollar. What type of contract has just been agreed upon?