Elena, Amy, and Fiona are going on a wartime mission! They must join Rosie the Riveter and other women workers at the Bath Iron Works, a huge shipyard in Bath, Maine. But they're not there to More →

Tío sends Fiona, Amy, and Marcus to ancient China where a kind Chinese dragon is an innocent part of the new emperor’s power grab. The monster hunters arrive in Chang’an as peasants, where… More →

Join colorful characters as they introduce readers to the Building Blocks of the Human Body! Students will learn about the core systems that allow us to live, discovering all of the weird and More →

Tío has an urgent mission for Jorge, Elena, and Amy. They must voyage to Harlem in the late 1920s. A fairy with a beautiful voice has been imprisoned. They must rescue her from her gangster… More →

A vial of poisonous hydra blood with the potential to kill millions has been unearthed! Jorge, Fiona, and Marcus must embark on an urgent mission to keep the modern world safe from the… More →

Coding and computer basics come alive in this installment of the popular Building Blocks series. Join Al, Stack, Tasky, and other colorful characters in this graphic-novel adventure into… More →

Is there a unicorn wandering around Woodstock? Or is it just a figment of some hippie's imagination? Marcus, Jorge, and Elena will have to find out as Tío sends them back to the Summer of… More →

In The Merpeople of Murfreesboro, a family vacation takes a turn when this mermaid family's special car springs a leak! The vet team race to the rescue, helping solve problems and keep these… More →