A Bout with a Trout (1947)

Continuity mistake: When Lulu lands on the book, before the drawing of a donkey attacks her, there is a wooden sign hanging that says school. The edges are quite jagged. After a bit of singing from the school house, another shot of the same sign shows it much less jagged. The style of the letters also change as well, and the metal part of the sign holding the sign to the post. (00:04:05 - 00:05:45)

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Question: At the end, the teacher makes Lulu write something on the black board 1000 times. It's difficult to make out, but what exactly is it she is writing?

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