PROCEEDINGS OF THE 20TH ANNUAL CONFERENCE ON RESEARCH IN UNDERGRADUATE MATHEMATICS EDUCATION
2017
San Diego, California
DNR-based professional development: Factors that afford or constrain implementation
Page: 1238
DNR-based professional development (DBPD) is a long-running program spanning seven yearswith multiple cohorts of in-service secondary mathematics teacher participants. This reportinvestigates teacher change among five key variables: facilitating public debate, using holisticproblems, attending to students’ intellectual need, attending to meaning of quantities and use ofstudents’ contributions. Is there evidence that DBPD contributed to higher implementation amongparticipants over time? What factors afford/constrain DNR implementation over time? Classroomobservation data indicate the largest impact was found in teachers’ attention to meaning ofquantities and students’ intellectual necessity while interview data provide insights to what affordsand constrains DNR implementation.Key words: