|Season 1, Episode 22|
|Air date||July 4, 2002|
|Written by|| Shelia Head|
George Arthur Bloom
|Directed by||Larry Jacobs|
"Less Than Zero"
"Fortress of Attitude"
To protect themselves from Hacker’s constant attempts to capture cybersite Happily-Ever-After, the King and his fairy-tale subjects construct a glass Skywall to keep Hacker out of the kingdom. But Hacker unfolds a brilliant scheme to crack open the Skywall — using the Wicked Witch’s Voice! Can the kids use models to outwit Hacker before Wicked sings?!
- Math topic: "Model Behavior" spotlights using models to simplify the way things work.
- The Three Little Pigs Sings “Ring Around The Rosies” in this Episode.
- For Real Segment: Bianca Gets Spacey - Bianca, who loves space movies, decides to go on a simulated mission in a model spacecraft at the Challenger Center. When an emergency arises, she gets carried away, and tries to take over other crew members' responsibilities.
- Main article: Model Behavior (transcript)