Making a Bubble Choice Level
Child bubble choice levels are the same as any other level, but they need the Bubble Choice section of the level editor filled in:
Display Name: What appears for students to click on
Level description: Short description of the level
Optional Thumbnail URL: Thumbnail for the level. Usually this is a preview of the completed level or a short gif animation of the completed level. The thumbnail displays in a square dimension - keep this in mind with App Lab thumbnails, since the App Lab screen is a rectangle and not a square
It's usually easier to clone an existing level. Here's an example parent level to clone
One you clone the level, you can edit the properties of the level via text:
name: Don't edit this - it's the name of the level itself
display_name: The header that appears for the user in the parent level
description: Text that appears at the top of the levels
level: The exact level name that should appear as a sublevel
Notice that filling in values uses single quotes. If you need to use a contraction when writing a description of display name, you can escape it with \'. For example: display_name: 'That\'s all folks!'