For each lab, we'll provide you with starter projects that you can save to your account.
When you open the project, you'll see this single block in the "Scripts" area (the central space of the Snap! window):
Every Snap! program is made up of blocks like say hello that tell the computer what to do. This block says hello to someone in a specified language.
You just saw how changing the inputs to a block changed its output. Now let's introduce some terminology.
say hello block is a reporter block. That means that it does some sort of computation and then "reports" the result. When you click it, the computer runs its code, and you see the reported result in a bubble, like this:
say hello, accept inputs that customize what they do, and those inputs show up as spaces you can edit. The say hello block accepts two inputs, a name and a language. You can change the inputs to change the output (in this case, the reported greeting).There are lots of blocks in Snap!, and you can even make your own. For this first project, most of the blocks are hidden, but you should see a 
block in the palette on the left.
fancy block somewhere below the say hello block in the Scripts area.fancy block, and click it to see the output. Does it look… Ƒᵃ𝐍𝓬у?fancy block into the first input slot of the say hello block, replacing the name from before, and click the block to see the output.
That's the power of reporter blocks! You can use the output of one block as the input to another block, making a chain of computation.
), and logging in if necessary.
Save this project to your Snap! account by choosing "Save" from the Snap! File menu (it looks like a piece of paper with a corner folded: 
).Be sure to save your projects after an important change and, if you are using a shared computer, whenever you're done for the day.
say hello and fancy blocks and observed their outputs, and you dragged the fancy block into the say hello block so that the output of one block could be used as the input of the other.