"Super-smart kid inventors Nick and Tesla Holt have outsmarted crooks, spies, and kidnappers, but now it's time to crack their biggest mystery yet: where the heck are their parents? With the help of their eccentric Uncle Newt, the twins trace the clues to their missing Mom and Dad, scientists working on solar-power research for a clandestine government project. They'll need all their wits, along with an assortment of homemade gadgets, to outsmart...

"Rafi and Rosi, two curious tree frogs, explore the bomba, plena, and salsa music traditions of their home island, Puerto Rico"--

Lucy and Henry are brother and sister, who--even though they're twins--don't do everything the same way.

Searching for their missing grandmother, two Korean children follow tracks into a fantastic world filled with beings from folklore who speak in Korean. Includes translations and information about the folkloric characters.

Hoot the owl cannot remember much about snow to tell his little sister, Peep, so she sets out to compose her own snow song.

A brother and sister wonder about the mysterious establishment across town called the Swinster Pharmacy.

After Mallory is kidnapped at her fencing meet, Jared and Simon search for her near an old quarry and find themselves amidst dwarves and goblins.

A brother and sister spend a day in preschool learning lessons about boundaries, such as that it is sometimes okay to make a lot of noise, but at other times one must be quiet.

A sister and brother are bothered by one another until they realize that two siblings might be okay after all.