"Team Umizoomi: The Ghost Family Costume Party" follows Milli, Geo, and Bot on a Halloween adventure as they help Little Ghost reach a family costume party by solving four riddles. The episode builds early math and logic skills through counting, number order, shape identification, spatial reasoning, and pattern recognition. Key concepts include turning a 6 into a 9, sequencing numbers to 13, using triangles to build a dog costume, and correcting repeating pumpkin-face patterns. With seasonal vocabulary such as costume, pumpkin, attic, and riddle, the story also emphasizes teamwork, problem solving, and perseverance. This educational Halloween episode aligns well with foundational mathematics and critical-thinking concepts commonly reinforced in early elementary curricula. Part of the "Team Umizoomi" series.