In a move that is exactly like the Knights of the Vale arriving at Winterfell to seal the fate of Ramsay Bolton or something, a new open letter has been published about the draft Australian mathematics curriculum.
You can read the letter here.
You can view a list of signatories here.
You can add your name to the list here.
I had a hand in organising it and setting up the Wordpress site to host it. However, I cannot claim it as my letter. It was drafted collaboratively.