About this lesson: In Tess the Dog – Lesson 1, students meet Tess, a friendly dog who needs help moving her ball closer to home. With guidance from JavaScript the Engineer, learners explore how coding instructions are written using functions. They practise using three fundamental commands - move(), turnLeft(), and putBall() - to direct Tess through a series of tasks. Students see how each function affects Tess’s actions in real time. The lesson also includes collaborative checking, encouraging students to compare their solutions with peers to reinforce understanding.