Podkayne -

Behind her, the gentle clicking of a pocket computer signaled that her younger brother, Clark, was being brilliant, anti-social, or most likely, both.

Classic Sci-Fi Review: Podkayne of Mars by Robert A. Heinlein podkayne

"You’re staring again, Poddy," Clark said without looking up. His voice was flat, devoid of the childlike wonder that usually occupied eleven-year-olds. "The trajectory hasn't changed in the last forty minutes. We are still falling toward Venus at exactly the planned acceleration." Behind her, the gentle clicking of a pocket

The air in the observation dome of the Trianon smelled faintly of recycled ozone and synthetic jasmine, a combination that fifteen-year-old Podkayne Fries had already decided was entirely too "Earth-side" for her tastes. Sitting with her chin in her hands, she stared out through the thick radiation glass at the magnificent, terrifying swirl of the inner Solar System. His voice was flat, devoid of the childlike

Clark made a noise that was halfway between a grunt and a sniff. "To do that, you'll need to master third-order differential equations, Poddy. Last night, you spent two hours trying to explain to the nursery attendant why babies shouldn't be kept in centralized crèches."