Similarly to recording a demonstration, a screencast allows students to narrate their thinking while showing their processes.
Screencasts are great tools for explaining what is happening on a screen. Students can narrate the solution to a problem, the directions for accomplishing a task, the naming of diagrams and other graphics, and create how-to videos for others.
When students are explaining something to others, they are solidifying their own knowledge
You might assign a recorded screencast when...
you want students to demonstrate their understanding of a concept or event as it plays out on a screen.
you want students to focus on performing and explaining a task rather than writing about the task.
you want to empower students to share their solutions with others.
you want to enhance or replace an assignment that asks students to explain a process.
Examples