Cleo is at it again inventing things.

It's time to go back to school, and Cleo is not looking forward to it. She was hoping that Winston, her tortoise, could go with her, but unless she can get his E.E.W. (Eco-Enviro-Warmer) working again, that's not going to happen.

And what's worse, Ms. Mason, the same person who's made fun of Cleo's big ideas ever since she moved into the town of Humble, is going to be her teacher. This school year's going to be the pits, unless Cleo can find a way to recycle, reuse or renew it.

One thing's for sure: Cleo's big ideas are sure to lead her onward and upward

Between chapters, Cleo includes several Do-It-Yourself activities that you can try out, too