Specifically, these practices "describe varieties of expertise that mathematics educators at all levels should seek to develop in their students" (Council of Chief State School Officers and National Governors Association, 2010). These practices are as follows:

1. Make sense of problems and persevere in solving them.
2. Reason abstractly and quantitatively.
3. Construct viable arguments and critique the reasoning of others.
4. Model with mathematics
5. Use appropriate tools strategically.
6. Attend to precision.
7. Look for and make use of structure.
8. Look for and express regularity in repeated reasoning.

In a simplier and more kid-friendly manner:

1. Keep Trying
2. Think About Math
3. Talk About Math
4. Model Math
5. Use Math Tools
6. Check Your Work
7. Look For Patterns
8. Use Shortcuts