Sprunki Cute vs Scary Beats Play Free! ATM Games Secret Coders: Robots & Repeats (Secret Coders, 4). Dr. One Zero has added a new class to Stately Academy's curriculum. But in "Advanced Chemistry," they only teach one lesson: how to make Green Pop! While their classmates are manufacturing this dangerous soda, the Coders uncover a clue that may lead them to Hopper's missing dad. Is it time to use Professor Bee's most powerful weapon: the Turtle of Light? From graphic novel superstar (and former computer programming teacher) Gene Luen Yang, comes Robots & Repeats, the fourth volume of Secret Coders. This wildly entertaining series combines logic puzzles and basic coding instruction with a page turning mystery plot! Dr. One Zero has added a new class to Stately Academy's curriculum. But in "Advanced Chemistry," they only teach one lesson: how to make Green Pop! While their classmates are manufacturing this dangerous soda, the Coders uncover a clue that may lead them to Hopper's missing dad. Is it time to use Professor Bee's most powerful weapon: the Turtle of Light? From graphic novel superstar (and former computer programming teacher) Gene Luen Yang, comes Robots & Repeats, the fourth volume of Secret Coders. This wildly entertaining series combines logic puzzles and basic coding instruction with a page turning mystery plot! This product may have a small discount mark. Our bookstores house over 5,000 square feet of bargain priced books from 25% 80% off the original list price. Our inventory includes publishers' excess books, which are all new, unread, and guaranteed to be in excellent condition. Some books may be discreetly marked with a small line or dot on the edge of the pages to signify their discount market status. This mark ensures that the books will not be returned to the publisher for a second credit, translating into big savings for you. For more information on publisher's marks, click here. Note: All orders are backed by a 100% satisfaction guarantee.