Scratch Jr for Desktop - Open Source Community Port
A community open source port of a well-loved early educational programming tool.
We are very excited about the use of Scratch Jr in the classroom, especially for children in early school years.
When we discovered the schools in our area did not have access to tablets, we decided to turn the tablet app into a full
fledged desktop app. In order to do this, we have taken the original code recompiled it for Mac and Windows.
While we have chatted to the official Scratch team, they have asked us to let you know
this important disclaimer about this experimental version:
Scratch and ScratchJr are trademarks of Massachusetts Institute of Technology, which does not sponsor, endorse, or authorize this content. See scratchjr.org for more information.
To port to the desktop, a small database and filesystem layer was rewritten, as well as access to video and sound.
This was accomplished using
Electron for the app hosting, the original html source of ScratchJR and SQL.js for the project database.
Electron is like having your own chrome browser to run one html webpage. And in our case, that webpage is ScratchJR.
Once installed, this app should not require an internet connection to work.
Deleting stuff (press and hold mouse)
Because this is a tablet app, there is no right click support. In order to delete stuff you need to click
and hold the left mouse button until everything wiggles. When you get a red X, click this to remove
characters and projects.
Where's the cat?
Sadly, the cat is not allowed to make an official appearance
in our app but has sent along all of his friends. Everything (else) you
know and love about Scratch Jr on the tablet is there.
All projects are stored locally on the machine inside of a file (which happens to be a sql lite database.)
Inside your documents/ScratchJR folder, there will be a scratchjr.sqllite file.
Reloading saved projects
For classroom use, sometimes it is handy to pre-configure a set of projects. All of the projects all save into the same Documents/ScratchJR/scratchjr.sqllite file.
To set up projects beforehand, you can make a backup copy of this file.
Make starter projects for your class - set up Scratch Jr with the projects you want everyone to use.
Open up the ScratchJR folder inside of Documents
Copy the scratchjr.sqllite file to scratchjr.sqllite.restore
Re-open ScratchJR for desktop.
After completing, there will be a menu option for restoring the projects. This will reset all the projects back
to a clean copy of your projects. This is handy for a shared classroom setting where you don't wish to
save the work between students.
Thank you to the official Scratch Jr team and their supporters.
In addition, thank you to the folks working on Electron, ElectronForge, and Sql.js. Thank you to AppVeyor and Travis CL for contributing free Mac, Windows and Linux builds.
Finally, a special thank you to ScopeIT Education for donating their technical expertise to this project.
For more exciting projects by this author, see: