Dr. Stiff has taught mathematics at the middle grades and
high school levels since 1971 after completing a B.S. degree in mathematics
from the University of North Carolina at Chapel Hill.
In May 1978, he received his Ph.D. in mathematics education from North
Carolina State University.
In August 1978, he joined the faculty of the University of North Carolina
where he received the 'Reginald V. Blackmon Award for Excellence in Teaching'
in 1980. In 1983, he returned to NCSU, and in 1985, he completed study in
computer science from the Institute for Retraining in Computer Science at Clarkson University
in New York. In 1992, he was presented 'The W. W. Rankin
Memorial Award for Excellence in Mathematics Education' by the North Carolina
Council of Teachers of Mathematics.
Since returning to NCSU, he has taught courses in
mathematics and mathematics education, including methods courses for middle
grades and high school pre-service teachers, methods courses in the uses of
technology for teaching mathematics, and graduate courses about teaching
algebraic reasoning. He has chaired to
completion the committees of nine Ph.D. students in mathematics education, and
he has received over $1,000,000 in grants.
Dr. Stiff has been active in many professional
organizations, including the Benjamin Banneker Association, NCTM, NCCTM, AERA, and
PME-NA. Most notably, he served as NCTM President (2000-2002), and on the Board
of Directors of: the National Council of Teachers of Mathematics, the Benjamin
Banneker Association, and the North Carolina Council of Teachers of
Mathematics. He has been a member of: NASA's inaugural Education Advisory
Committee; the Mathematical Sciences Education Board of the National Research
Council; the NCTM Algebra Task Force; the Editorial Boards of the Journal for
Research in Mathematics Education and Mathematics Teacher; the Instrument
Development Panel for the 1994 NAEP Mathematics Assessment; and numerous
national, regional, and state mathematics conference program committees.
Dr. Stiff's research focus and other professional activities
include effective teaching strategies, problem solving, the mathematics
education of African-American children, and uses of instructional technologies
in mathematics teaching. His research methodologies include experimental
design, surveys and interviews, and classroom-based investigations. He has more
than 100 publications, including the authorship, co-authorship, or editorship
of twelve textbooks in middle grades and high school mathematics, six
professional books and eight book chapters.