Productive Struggle [part 1]

I want to know more about "Productive Struggle".

Let me be more specific:
If students are allowed to reasonably struggle with a math task, I want to know more about a teacher prescription of actionable steps to:

• move the learning forward and 
• avoid a meltdown level of frustration

I built a Productive Struggle Desmos Activity if you would like to share your thoughts and learn from others interested in this topic.

Robert Kaplinksy recently gave a wonderful Ignite Talk on Productive Struggle. Communication was a big part Robert's message. I want to think more (in part 2) about communication as one of the actionable steps in that prescription.

Struggle,
1128

Part 2 is here.