What are the NEW Math Practice Standards?

Some of us are in districts that have begun to make the transition to Common Core State Standards for Mathematics (CCSS-M). And, some of us are in districts that are just beginning to think about the upcoming transition. No matter where we're at along the implementation spectrum, one this is for sure: The biggest challenge teachers will have in implementing the CCSS-M will be in focusing mathematics instruction around the new 8 Standards for Mathematical Practice (Practice Standards). This means that students should learn all of their math content with the context of the practice standards.
So, let's start discussing the 8 Practice Standards and build a common vision that describes what they look like, sound like, and how they will affect assessment and grading in ALL of our math classrooms.