


Others claim that most of what teachers need to know comes directly from classroom experience and defies codification. Some claim that what teachers need to know can be identified, verified, systematized, and taught. The royal advisers' disagreements about the size and whereabouts of the moon resemble the disagreements about what teachers need to know in order to teach and about how and where they learn what they need to know. and not as high as the big tree outside my window." The tiny golden moon on a golden chain that the Jester has made to match the Princess's image soon makes her well again. He concludes, "The moon must be just as large and far away as each person thinks it is." When the Jester asks the Princess how big and far away the moon is, she replies, "It's just a little smaller than my thumbnail. When he comes to console his depressed monarch with music, the Court Jester learns about the royal counselors' competing images of the moon.

Lastly, the Royal Mathematician allows as how the moon is 300,000 miles away, is flat like a coin, is made of asbestos, is half the size of the kingdom, and is pasted to the sky. The Royal Wizard, in his turn, claims that the moon is 150,000 miles away, is made of green cheese, and is twice as big as the palace. The Lord High Chamberlain protests that the moon is 35,000 miles away, is bigger than the princess's bedroom, and is made of molten copper. When the King asks her what will make her well, she replies, "The moon." The King then summons his royal counselors and asks them to produce the moon to restore Princess Lenore's health. In Many Moons, the King's daughter becomes ill of a surfeit of raspberry tarts.

Introduction To frame our discussion of teacher learning and how researchers from the National Center for Research on Teacher Education are studying this learning, we will draw on a fairy tale written by James Thurber (1943).
