- When students create their own variables, they’ll be able to set and change the variables using "set" and "change" blocks.
- Built-in variables, such as direction and costume, have "set" and "change" blocks associated with them.
- The direction variable has "point in direction _" and "turn right _ degrees" blocks.
- The costume variable has "switch costume to _" and "next costume" blocks.
- Other built-in variables include x, volume, and pen size.
- Check out our other tip about the difference between setting and changing variables in Scratch!
![point in direction_ and turn right _ degrees blocks in Scratch point in direction (90); turn right (15) degrees](http://csteachingtips.org/images/poingDirTurnDeg.png)
![switch costume to _ and next costume blocks in Scratch switch costume to (costume2); next costume](http://csteachingtips.org/images/switchCosNextCos.png)
![examples of built-in x variable in Scratch set x to (0); change x by (10)](http://csteachingtips.org/images/setXChangeX.png)
![examples of built-in volume variable in Scratch set volume to (100)%; change volume by (-10)](http://csteachingtips.org/images/setVolChangeVol.png)
![examples of built-in pen size variable in Scratch set pen size to (1); change pen size by (1)](http://csteachingtips.org/images/setPenChangePen.png)