Everyone Can Code Puzzles is an all-new student guide to Swift Playgrounds that reinforces problem-solving strategies and critical-thinking skills through over 40 hours of flexible activities. Each chapter helps students build on what they already know, experiment with new coding concepts, apply their understanding, and creatively communicate how coding impacts their lives.

This lesson is for students who are very familiar with CSfirst or Scratch, and is intended to deepen and assess their familiarity with the blockly code language used in both. First the class discusses what "reverse engineering" is and why is is beneficial to them. Then, they will work in groups to recreate an example scene playing on the main screen, one sprite at a time. At the end, the students will compare their work to the code from the example project and discuss any differences that make the code work better, worse, or more efficiently. They will share the link to their group project to turn it in.