Getting to Know the Snap! Interface

Getting to Know the Snap! Interface

Instructions for opening files are in yellow at the bottom of Snap! Accounts and Files.

1. Open the "U1L1-Interface" project file that you created on the previous page.
2. Find , and click it so you can draw.

The command tells the sprite (located at the tip of the arrow, ) to set its penpoint down to draw.
You can click any script (or block) to run it.

3. While a script is running, its border is highlighted. Some scripts run so quickly that you may not notice the brief border flash. This script takes longer to run, so it's easier to notice the highlighted border.
   Before building this script, predict what it will do. Then try it out.
   


4. Experiment! Look through the tabs in the color-coded palette menu (shown right) to find each of the blocks below. Click each block at least once, and figure out what all they do. Try changing their inputs (number, text, color, etc.) also.
   
Blocks do different kinds of things. Some blocks create changes on the stage. Other blocks report information right where they are:
In general, you need to press before you can draw. Here, you already pressed it above.
5. Create this two-block script in the scripting area. Click on it a several times to see what it does.
   
You may want to clear the stage periodically by finding and clicking the block.
6. Modify the numbers in the two-block script above and discuss how each change affects the sprite's behavior. Try changing the numbers so that the sprite follows a square path if your script is clicked enough times.