Practice the basics of coding using Blockly. Activities featuring the cast of Frozen and step-by-step instructions guide readers through exercises that teach sequencing, debugging, and more. Readers can try out the skills they learn at a code.org companion site.

Why code? -- Take a tour -- Let's get started! -- Sequence -- Problem solving -- Draw squares -- Add a triangle -- Debugging -- Repeat loops -- Patterns that repeat -- Sisters design with loops -- Nested loops -- Nested designs -- Functions -- Draw flowers with functions -- More flowers with functions -- Nested functions -- Simplifying with functions -- For loops -- For loop spirals -- More spiral designs -- A grand snowflake -- Follow the code -- Review -- Get inspired! -- Try it yourself! -- Answer key.