Mathematical communication ability is one of the learning
competencies that can be achieved through generative learning.
One of the main material in mathematical in high school X.10
which pretty much related to the SPLPtSV mathematical
communication, for it has done the research ability of
mathematical communication in learning material of generativelly
in order to know the description of mathematical communication
skill of teachers and students in generative learning. The study
was conducted in SMA Negeri 5 Pekanbaru on the og students of
class X with 32 people on the odd semester of 2010. Excavation
data through observation with eight meeting and four RPP. In
generative learning conducted pretest and postest, observation
and interviews. The data obtained is tabulated and analyzed
descriptive. The risults showed that the ability of mathematical
communication in learning phase of generative in subject matter
SPLPtSV obtained: at the phase of teacher orientation score 4.00
: students score 3.87; disclosure of