components.
It is important to understand that the use of terminology
in the present article differs somewhat from that in an educational
context. For example, a “procedure” in ACT-R is
simply a component of knowledge that can produce other
knowledge components and/or lead to external behavior.
In mathematics education, we might refer to the procedure
of solving a linear equation. An ACT-R model of that
task would consist of many productions and facts that are
brought to bear. Even a simple task such as adding integers
may consist of many productions, including ones associated
with recalling arithmetic facts, executing counting actions,
and so forth (see Lebière, 1999).