"Peg and Cat have invited some friends over to see Cat's new drawing called Circles. But now Peg and Cat have a really big problem: Peg's room is super messy, and the guests are on their way! Luckily, Peg has an idea: what if they sort things out by sorting? Can separating things by shape, color, or size help them put all the stuff away in time -- even when balls and balloons and CDs and Frisbees coming spilling out of the closet at the last minute?"--Publisher....

Third-grader Jack Doyle is walking his dog Scout when an acorn drops on his head and he suddenly discovers that he can converse with Scout and other animals and insects. This unusual development proves helpful as Jack tries to solve the mystery of why his best friend Leo's homework is missing.

The big school trip was at the end of the week, and Jack couldn't wait. But someone kept playing pranks at school including dyeing the class guinea pig green, and Principal Bumble threatened to cancel the trip if the pranks didn't stop. Can Jack and Elizabeth solve the mystery in time to save the trip?

When life gives them a problem to solve, Peg and Cat make lemonade -- and get a lesson in bartering -- in a refreshing new math adventure. It's a hot day, so what could be cooler than setting up a lemonade stand? When Peg needs some marbles to keep her special marble company, she and Cat decide to sell lemonade in exchange for ten marbles a cup. But the Teens have other ideas. "But just one cup for ten marbles?" says Mora. "I'm not made of marbles!"...

Joey, the new kid in Howard's class, has a hard time sitting still and paying attention, and when Joey tells Howard he just wants to fit in with the other students, Howard uses Joey's chameleons to help Joey learn how to be a part of the group and fit in better with the other kids.

"Solutioneer Max Starling travels to a fictional South American country to rescue his parents who have become embroiled in a political power grab"--Provided by publisher.

Peg's mom has given her and Cat five important letters to mail. "She says it's because we're growing up," says Peg. And sure enough, the height marks on the wall show that they're getting taller! But there's a problem: when they get to the mailbox, they find a very big dog sitting in front of it. How can they get around or behind this scary-looking canine to mail the letters? Or could it be that they're jumping to conclusions -- and the obstacle itself...