Dan Gutman

When all school holidays are cancelled at Ella Mentry School, A.J. and the gang work with teachers to figure out weird-but-real holidays they can observe, in a book featuring pages of puzzles, games and more.

Principal Klutz has invited a special guest to Ella Mentry School. Her name is Miss Aker, and she's going to show A.J. and his friends how to create cool things out of materials like balloons, straws, and even Popsicle sticks! But what happens when they make a robot so smart, it plans to rule the world? Can anyone stop it?!

Miss Daisy's unusual teaching methods surprise her second grade students, especially reluctant learner A.J.

"A. J. and his friends have the weirdest Easter in the history of the world when Mayor Hubble hosts an egg hunt at the mayor's mansion"-- Provided by publisher.

"The wackiest road trip in history continues as the McDonald twins travel the Southwest dodging nefarious villains and visiting weird but true American landmarks"-- Provided by publisher.

A.J. is planning a big birthday to celebrate turning 9 and his parents even hire a party planner named Mr. Marty. Mr. Marty orders some weird stuff to celebrate though.

A.J. and his friends get a Personal Digital Assistant named Miss Porter as a substitute teacher, who can order pizza and tell endless jokes, but grows power-hungry when her system is changed and tries to take over Ella Mentary School.

A.J.'s class is going head-to-head against Dirk School in a charity softball game. The losing team must clean the winning school's toilet with a toothbrush! Mr. Ott, retired baseball pro, intends to lead Ella Mentry School to victory, but will his weird tactics actually make the team lose?

"Miss Z, a mysterious billionaire and a collector of rare photographs, is sending her four recruits back in time on a mission to capture, for the first time, one of the most important moments in American history-- Abraham Lincoln giving his famous Gettysburg address"-- Provided by publisher.

"Summer is almost over, and you know what that means--time to head back to school! But when a tropical storm ends A.J.'s vacation earlier than expected, he and his family have to stay at Andrea's house. Ugh, disgusting! When everyone in the house starts getting cabin fever, and even back-to-school shopping won't calm the kids down, Andrea and A.J. are sent to Camp Ockatollyquay. The catch? It's a camp to get kids ready for school! But not to worry--Andrea...