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4. Monster Feelings Introduction


(upbeat music)

Today, you will use functions and vector graphics to animate a monster's feelings.

In your project you'll animate your own monster to express different emotions like happy, sad, suprised, and angry.

Animators use different types of graphics.

Two popular graphic types that are used in Scratch are vector and bitmap.

Bitmap images are created with pixels which are tiny squares of color.

Vector graphics are created using points and curves so they tend to look nicer in Scratch.

At first glance, a bitmap and vector image may look exactly the same.

After zooming in, you can see the square sides of the bitmap images where as the vector image has smooth outlines.

An advantage of using vector graphics over bitmap graphics is that the vector images appear smooth when you make the image bigger.

Vector graphics are also easier to edit and manipulate because you can edit the points and curves.

In a bitmap graphic you can only draw or erase.

Today, you will program facial expressions on a monster.

Then you will have the chance to edit and manipulate the vector graphics to personalize your monster.

Here are the monsters that you can select for your project.

Each monster is in its own starter project.

Now its your turn.

Choose one of the starter projects linked next to this video.

This opens scratch in a new window.

Sign in to Scratch using the sign in information in your CSFirst passport.

This is the username you received in a past CSFirst club or a new username you received today.

Click the remix button.

Once you have signed in to Scratch return to this tab and continue to the next video.

In the next video you'll code the monster to show different expressions.


  1. Choose and open a starter project.
  2. Remix the project.
  3. Sign in to Scratch.
  • Fil-Pixel-example-wiki.png by BlueEel ( licensed under CC BY-SA 3.0 (
  • VectorBitmapExample.svg by Darth Stabro ( licensed under CC BY-SA 3.0 (