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The gang goes to a science museum. Ellen reveals she’d like to have children. So, she volunteers to baby-sit Mia, Matt’s daughter, while Matt and Paige go camping. They hit it off and have a great time. But then Mia remembers she has a science project due the next day, and she hasn’t even started. So Ellen tries to make Mia do it all herself, but tries too hard. Thus, everyone comes over to Ellen’s and is working on Mia’s project while Mia goes to bed. They discuss Matt and Paige’s sex life. The next day, Ellen gets a call from school that she must come in immediately. Turns out Mia heard what Ellen said the night before and Mia said it to one of the boys in the class. So, Ellen is forced to sit down with Mia and do her best to explain the facts of life. Add a recap »