Sequence- Build a simple one-key application to move a sprite around the stage with the arrow keys.
Iteration - Use a forever loop for the sprite to keep moving around the stage with some random movements and learn a little more about the Scratch environment.
Conditional Statements - Use conditional statements to control program flow in repeat, while, and if statements and create a simple game where a predator eats it's prey.
Variables - Use variables to draw squirals and investigate turtle graphics further and create asteroids type continuous movement control.
Messages - Sprites are controlled independently of each other and can interact with each other when touching. Broadcasting messages allows communication between sprites and the stage to control several backgrounds within an application.