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2. Introduction To Procedures

Transcript

(bright music)

Hey, welcome to Scratch Fashion and Design.

Today, you'll create a program that designs patterns.

You'll be able to test the patterns you create on things like clothing furniture or even wallpaper.

In doing this you'll learn about a computer science concept, procedures.

A procedure combines many instructions into one task or block.

The procedure can then be called to run that set of instructions whenever needed.

In Scratch, you create a procedure by making a block.

For example, you could combine a set of instructions into a dance procedure.

When this code runs, it runs the glide block, then calls the procedure.

All the code for this procedure runs before moving onto the next glide block.

Alternatively, you code the same example, without procedures like this.

(whoosh)

This requires a lot more time and effort.

Not only that, but look at how much prettier the code looks when you use a procedure.

Rather than copying a bunch of code to make the sprite dance, it's all placed into a procedure that you can call whenever needed.

Procedures allow you to simplify common actions.

You can then create code that looks good, is much easier to read, and takes less time to create.

(whoosh)

Take a moment now to make sure you're signed into the CS First website, using the Username and Password from your passport.

If you're not signed in, you won't receive a digital badge for completing this activity.

So be sure to sign in.

(whoosh)

Today, you'll begin with a starter project that has a procedure to assist in your pattern creation.

When this video's over, click on the Pattern Maker Starter project link, sign into Scratch, (upbeat music)

and click the Remix button.

Then return to this tab, and watch the next video where you'll begin printing your first pattern.

Now it's your turn.

Click the Pattern Maker Starter project link.

Sign in to Scratch, and click the Remix button.

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Instructions
  1. Open the starter project.
  2. Remix the project.
  3. Sign in to Scratch.