Point out products of CS to help students see the prevalence of computing and computer programs in their daily lives.
Review vocabulary at the beginning of a lesson, at the end of a lesson, and before in-context use to help students understand all necessary concepts.
Allow students to make their own design decisions by providing problems that have multiple solutions.
Motivate students by having them explore projects created by their peers and then provide feedback on peer projects.
Demo Scratch projects can motivate and inspire students; there are interactive examples on the Scratch website, or you can create some yourself based on the topics you plan to teach!