The secret coders have their hands full this time. The evil Dr. One-Zero not only has managed to put together enough of his green pop formula to enslave the world, but worse, he has control of the turtle of light. Professor Bea explains that their only hope is if Hopper, Eni, and Josh can figure out how to use their coding skills to open a portal into another dimension.

Why should I read this book?

As with the other Secret Coder books in this series, the story is interesting and the coding lessons are woven into the narrative so skillfully that, while you will notice them happening, they seem like part of the story and utterly necessary to do. This is a great book to grab students’ attention and interest them in a valuable aspect of STEM at the same time.

Who is this book best for?

Fourth grade through middle school.

Challenge Rating: No Challenge

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