"Maureen and Francine Carter are twins and best friends. They participate in the same clubs, enjoy the same foods, and are partners on all their school projects. But just before the girls start sixth grade, Francine becomes Fran -- a girl who wants to join the chorus, run for class president, and dress in fashionable outfits that set her apart from Maureen. A girl who seems happy to share only two classes with her sister! Maureen and Francine are...

"Lunella Lafayette is an inhuman preteen genius who wants to change the world! THAT JOB would be a lot easier if she wasn't living in mortal fear of her latent inhuman gene. There's no telling what she'll turn into -- but Luna's got a plan. All she needs is an Omni-Wave Projector. Easy, right? That is, until a red-scaled beast is teleported from the prehistoric past to a far-flung future we call ... today! Together they're the most Marvelous Team-Up...

Annemarie and eleven other classmates find various ways to draw sets of twelve and learn about multiplication along the way.