"Isabel and Zo ︠love playing with Isabels puppy, Rollo-- especially when they play at Zos︠ house because thats where the Baby Stealer (aka Zos︠ older brother, Lionel) lives. The girls push Rollo around in a stroller until the Baby Stealer jumps out and scares the girls, then runs off with Rollo. Its a thrilling game that always has a happy ending--with two giggling girls reunited with their fur baby, safe and sound. But one day, Lionel wont play the game. In fact, lately all he seems to want to do is play video games with his friends or raid the fridge for snacks. When anyone tries to talk to him, he either answers with a grunt or not at all. "What is wrong with him?" Izzy asks. "Hes a teenager," Zo ︠explains. As if that isnt worrying enough, Izzy has been noticing changes in Rollo, too. Hes not fitting into Izzys baby clothes anymore, and he keeps doing things that get him into a very big amount of trouble, like eating everyones ice cream when they arent looking. His shenanigans get worse and worse until Isabel finally realizes something ... Rollo isnt a baby anymore -- hes a TEENAGER! Is there a cure for being a teenager? Izzy is going to find out! "-- Provided by publisher.

580L Lexile.

Decoding demand: 83 (very high)

Semantic demand: 94 (very high)

Syntactic demand: 83 (very high)

Structure demand: 85 (very high) Lexile.