SCRATCH

FAQ

Q-Can you explain the interface to me?

A-The interface, seen in the image below, is separated into six sections.

The Menu section is rarely used during application creation. It does however allow you to save and load your project.

The Tab Select section allows you to choose between Code, Costumes and Sounds. Each of these is associated with the sprite that you have selected in the Sprite section. You will mostly work in the Code tab.

The Tab Content section is based on what tab you have selected. The Code Content (shown below) is separated into two parts, the list of possible code blocks on the left and your program on the right. The Costumes content (not shown) would allow you to alter the images for the sprite. The Sounds content (not shown) allows you to use different sounds in the sprite.

The Application section is where your application is ran. When you hit the green flag, Scratch executes your code in this area.

The Sprite section allows you to add different sprites to the application. It allows you to select the active sprite. It also shows you some information about the sprite such as its size and location.

The Backdrop section allows you to choose different backdrops.

A few extra details.

• We start a program using the green flag. We stop the program using the stop sign.
• We can execute a block of code by double clicking on it.
• The Tab Content reflect the selected tab above but also the selected sprite in the Sprite section. So when you click on the Sounds tab, that is the sounds for that sprite only. Similarly, the code that you create only applies to the sprite that it is located in.

Q – Can you explain the coordinate system in Scratch?

A-The coordinate system resembles graphs in math class. There is a y-axis and an x-axis. Objects are located on the application based on their center point.

The following Scratch application allows you to see how it works. Use the arrow keys to move the cat around and see how the coordinates change.

Link: https://scratch.mit.edu/projects/53978508/