You may download the Alpha version here.
It provides no guarantee, and customer service (in Makeblock) does not apply to alpha versions.
Thus using this version in your class is highly unrecommended.
But you are welcomed to try out new features / bug fixes in this version.
No Beta versions available.
If you find problems with the current version which works in the previous versions,
you may access the downloads here. But they are no longer maintained, and no customer service will be provided on previous versions.
Windows XP Special Version: mBlock 3.4.2 beta2 Windows Download
This version uses a special Arduino distribution, that may compile programs that otherwise do not work in Windows XP.
Generally, Windows XP is not supported. Since there is no Arduino version perfectly works with Windows XP while having all the features needed by mBlock.
Learn how to use mBlock, from adding your first block to connecting your robot
Read Getting Started Guide
keep updated by checking up new features and bug fixes of mBlock
Read release logs
Read source code, build extensions or make your own version of mBlock.
Check up our Github Repo