Hello world! I'm talking about a variable's scope in Alice 3.

Scope refers to where in the program a variable is available.

Scope is usually limited to the control structure, such as.

doTogehter,

where the variable is declared. I have the greeting program that we looked at previously.

This time instead of declaring greeting here.

I have put it

Inside that doTogether block.

That means that greeting will only be available to us

in that block.

If I pick an assign tile,

It says no variables for properties accessible, canceling.

OK.

Let's move this outside that,

and put it

in this do in order block, that's the block it's in now. And now I put in my  assign statement, I can give a value to greeting.

So that's the scope.