Hello Ruby - a book about a girl who uses computational thinking to solve problems.

https://www.amazon.com/dp/1250065003/ref=cm_sw_r_cp_ep_dp_kEjcBb6DZ5ZKZ

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Hello Ruby: Expedition to the Internet

https://www.amazon.com/Hello-Ruby-Expedition-Linda-Liukas/dp/1250195993/ref=sr_1_2?keywords=hello+ruby&qid=1574706396&sr=8-2

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Hello Ruby: Journey Inside the Computer

https://www.amazon.com/Hello-Ruby-Journey-Inside-Computer/dp/1250065321/ref=sr_1_3?keywords=hello+ruby&qid=1574706396&sr=8-3

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