Have you ever wanted to create a Scratch program that is interactive or offers multiple outcomes? Some Scratch programs are static: the outcome is fixed and the same thing happens each time. Some are dynamic: they are capable of action or change each time they are run. In order to create dynamic programs, the programmer can use conditional statement blocks (in the Control blocks category) to give instructions on how the project should respond in different circumstances.

The "broadcast" and "when I receive" blocks work together. The "broadcast" block sends a message from one sprite to another. The "when I receive" block tells a sprite what to do when it receives that message.

Use operator blocks to create math games, join text to information stored in variables, complete conditional statements, and more!

The "stamp" block can be accessed by adding the Pen Extension. When used in a script, the "stamp" block will allow you to produce a duplicate image of the sprite and stamp it onto any location on the stage.

Because the stamp is simply an image of the sprite at the moment it was stamped, it cannot be programmed but can still be a powerful tool to create interesting patterns or movement tracks. For example, try creating a piece of an image (like a petal) that can be repeatedly stamped in a pattern to create something new (like a flower).