Computer work has become a big part of doing science, and knowing how to code has become an increasingly valuable skill for scientists. In this book, readers combine six basic coding ideas--algorithms, sequences, loops, variables, branching, and decomposition--with science experiments and tests in an age-appropriate and interesting way. Three screen-free, science-focused activities encourage understanding of each core concept as well as get readers working as a team. A concluding puzzle gets readers' coding brains working even more!