Some of these videos appear in the CS Principles programming unit and are displayed here as a quick introduction to each of the main concepts from the unit. Check out each video to see how you can add new features to your app.
Deep dive into App Lab
Walk through the creation of a personalized survey app from start to finish. It uses user interface elements and a lightweight database to keep track of results.
Procedural abstraction and top-down design
Program a turtle to move around the screen and draw anything from basic shapes to complex designs.