National Mathematics Standards
Compared to the four subject dimensions:
process, knowledge, attitude, and perspective
Four subject dimensions  Categories in National Mathematics Standards 

Process and Inquiry knowledge Or Inquiry and process skills The system of actions and procedures that are used to create knowledge in the subject or discipline. 
Problem Solving
Reasoning and Proof
Communication
Connections
Representations

Content knowledge The ideas (facts, concepts, generalizations, principles, theories, and or laws) that are created by doing the subject. 
Number and Operations Algebra Geometry Measurement Data Analysis and Probability 
Perspective The relationship of the different dimensions of a subject or discipline to its other dimensions and to its whole as well as the subject's or discipline's relative significance for explaining and understanding the world. 
Connections (connections are included in both the perspective and process skills categories. The ideas expressed in these statements describe perspectives of mathematics and are written as skills in their identification and use.

Attitude The diposition and values that people have that increase their likelihood of success in the subject or discipline. 
The inclusion of disposition and value statements in the principles, beliefs, and other supporting information in the standards. Such as, become independent learners with a disposition and capacity to engage in and value mathematics in their everyday lives. 