What to open a ggb file with

[speckytecky]

We have a Maths teacher who is asking how he can open a file with a ggb extension. I can see from a search that this is some sort of Match programme but can't see any software that routinely handles it. Any suggestions please?

[elsiegee40]

I think it's created with GeoGebra

https://www.geogebra.org/

 

There appears to be an ability to open the file in the Maths Apps bit

Edited February 28, 2017 by elsiegee40