From her upside-down house, the eccentric Mrs. Piggle-Wiggle issues to parents her marvelous cures for such common children's diseases as Won't-Put-Away-Toys-itis, Answerbackism, and Fighter-Quarrelitis.

Andy and Terry's incredible, ever-expanding treehouse has 13 new stories, including a watermelon-smashing level, a wave machine, a life-size snakes and ladders game (with real ladders and real snakes!), a rocket-powered carrot-launcher, a Ninja Snail Training Academy and a high-tech detective agency with all the latest high-tech detective technology, which is lucky because they have a BIG mystery to solve - where is Mr Big Nose??? Well, what are you...

"Lucy and her goofball brother Andy, two Neanderthal siblings living 40,000 years ago, take on a wandering baby sibling, bossy teens, cave paintings, and a mammoth hunt. But what will happen when they encounter a group of humans? Includes a special paleontologist section that helps to dispel common Neanderthal myths"--

"School's out, and Miles and Niles are running wild in the woods outside town: climbing trees, exploring caves, and, yes, pranking. But these leafy, lazy days of mischief darken when bully Josh Barkin and his cadets from a nearby kids' boot camp discover the merrymakers--and vow to destroy them"--

While searching for the Rat with the Human Face, friendships fray as club members Dave and Lyle compete for Marilla.

"Lucy and her goofball brother Andy, two Neanderthal siblings living 40,000 years ago, take on a wandering baby sibling, bossy teens, cave paintings, and a mammoth hunt. But what will happen when they encounter a group of humans? Includes a special paleontologist section that helps to dispel common Neanderthal myths"--

When eleven-year-old Max Walburt decides to run for class president claiming he is the funniest student, he must survive poop scandals, crazy teachers, and stalker ducks to win the election.

Follows the experiences of benchwarmer Steve, who struggles to conquer his fear of getting hit with a baseball before his first year on the school team is ruined.

Geronimo follows clues in a diary all the way to Mouse Everest in search of his old friend Professor von Volt who has mysteriously disappeared.

"The last kids may have escaped the forbidden fortress by the skin of their teeth, but there isn't much to celebrate. Thrull has what he needs to complete the Tower, Rezzoch will most certainly come to Earth, and the world as they know it will cease to exist. Except Jack's Cosmic Hand is now even more powerful than he realized, and it might just be able to stop the inevitable from happening. To get the answers he seeks, he'll need to travel farther...