In 1995, computer programmer Yukihiro Matsumoto introduced Ruby programming language to the world. He created a language that used his favorite elements of other languages, but was more object-oriented and easy to use, even for coding newbies. Ruby is also open-source software, meaning anyone can use, modify, and distribute it. Inside this volume, readers will learn the ins and outs of coding with Ruby, including why using blocks of text and mostly plain English text makes it an ideal program for ease of use. Color photographs, sidebars, and a graphic organizer make this volume both informational and enjoyable. Readers interested in STEM topics are sure to love this book.