User Interface, Scratch 3 Walkthrough and Demo
LibraryMakers - Learning the Scratch user interface
The Scratch user interface Download Scientific Diagram
Scratch - About
Scratch GUI(Graphical user interface)
Visual programming language - Wikipedia
Scratch 3.0, Scratch Wiki
Scratch (Programming Language), Scratch Wiki
Scratch 3.0 User Interface Map ( U.I. Map) by TogetherON3