Ethan is convinced no adult actually uses algebra, but a chance meeting with Danica McKellar helps him look at math in a different light. Amy's frantic search for her missing wedding bands leads her to Ben, who advises her to break-up with Ricky before it's too late. George and Kathleen's romantic dinner is interrupted by an uninvited guest. Meanwhile, Mrs. Stone confronts Grace about her relationship with Jack.
Elenco: Molly Ringwald , Megan Park , Daren Kagasoff , Ken Baumann , Shailene Woodley , Camille Winbush , Steve Schirripa , Luke Zimmerman , Allen Evangelista , Josie Bissett , Francia Almendarez , Renee Olstead , Amy Rider , Philip Anthony-Rodriguez , Matthew Levinson , Joseph Levinson , Jorge Pallo , Anne Ramsay , Danica McKellar , Greg Finley .