Harry and his classmates in Room 3B have some important holiday celebrating to do-and they're talking about more than Christmas! Hanukkah, Kwanzaa, Three Kings' Day, and the Korean New Year are holidays that some of the students celebrate, and Miss Mackle wants everyone to learn about them. All of the kids are feeling festive-except Harry. He's not interested in the holidays, Room 3B's new student, or even the new class pet. What's bothering Harry? Can anything shake him out of his daze? Miss Mackle's third graders share December holiday traditions--Christmas, Hanukkah, Kwanzaa, Three Kings Day, and Korean New Year--with each other and with Harry's great grandfather, who has just moved to a nursing home.