Math Fluency: Simply 'fast' and 'accurate'?

Attention all K-5 parents and teachers!
As mathematics educators at all levels consider effective implementation and instruction related to state or Common Core State Standards, a frequently asked question is, 
"What does it mean to be fluent in mathematics?" 
The answer, more often than not, is, "Fast and accurate." Building fluency should involve more than speed and accuracy. It must reach beyond procedures and computation. 

Did you know?
There are actually three aspects to mathematical fluency. If we don't stress each, we're not doing what we need to be doing with our students:

1. Accuracy
2. Efficiency
3. Find out the third here