John & Wendy.
1) Oh, baby!
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Third-grader Katie wishes on a shooting star, and this time she becomes her best friend's baby sister.
6) Out to lunch
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Third-grader Katie Carew feels torn between her two best friends, but after wishing she were someone else, she morphs into Lucille, the lunchroom lady, and experiences life from the other side of the counter, with unexpected results.
8) Get lost!
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Katie Karew's third-grade class spends three days at Science Camp, where Katie magically changes places with the strict Head Counselor while on a hike and gets her group helplessly lost.
9) Cat Days
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"Meet Cat. Cat sits, runs, and plays. But at the end of the day, Cat can sure use a nap"--
18) My Pops is tops!
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Fourth-grader Katie secretly believes that her grandfather is too old to be her partner in the school Olympics until she trades places with him for a day--thanks to the magic wind.
20) I'm game!
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Katie magically turns into her father right before he is set to appear on his favorite television game show, but unfortunately she cannot answer a single question.