In order to test our programs, we need to use commands that start them when certain conditions are met. This condition can be "When I press a button" or "When I raise my voice", as well as many others.
The first such command we will learn about is to start our program using the "Go" button.
By now you have noticed a button that looks like a green flag that's found above your scene:
This is the "Start" button. We will use it to start most of our programs. To do so, we must use a special block from the yellow block palette:
All commands that are attached to this block will be executed in order when you press the "Start".
This Tutorial is used in the following courses and lessons
"Keep 'em clean" is a game that uses the players' real-life movement captured by a camera to control many "people" and push them towards a sink where they wash their hands! In this course, you will learn the basics of programming with Scratch, as well as using the "Video Sensing" extension to receive movement from the camera!
In this course, you will learn how to program the game "Keep 'em clean". This is a game where the player controls a number of "people" on the screen using movements detected by a camera.