National & International

Advisory Board, Applying and Refining a Model for Dynamic, Discussion-Based Professional
    Development for Middle School Teachers about Fractions, Ratios and Proportions
, University of
    Massachusetts, 2022–present. link–>
Member, International Committee: Mathematics, Education, and Society, 2019–present. link–>
Director, Equity and Social Justice Working Group, Mathematics Teacher Education Partnership (MTE-P),
    2017–present. link–>
Leadership Team, Mathematics Teacher Education Partnership, 2014–present. link–>
Advisory Board, Technology-Rich Units for Future Secondary Teachers: Forging Dynamic Connections 
    Between Geometry and Functions, North Carolina State University, 2017–2020. link–>
Member, Regional Advisory Committee, Eighth International Mathematics Education and Society (MES)
    Conference, Portland, OR, 2013–2015.
Program Chair, American Education Research Association Special Interest Group: Critical Educators for
    Social Justice
, 2009–2011.
Delegate, Conference Board of Mathematical Sciences Forum on Content-Based Professional 
    Development for Teachers of Mathematics, Reston, VA, 2010.

Georgia Mathematics Advisory Council, 2021–present.
Association of Mathematics Teacher Educators
, 2008–present. link–>
TODOS: Mathematics for All, 2002–present. link–>
Benjamin Banneker Association, 2000–present. link–>
National Council of Teachers of Mathematics, 1992–present. link–>

Series Editor, Studies on Mathematics Education and Society. Open Book Publishers, 2020–present. link–>
Associate Editor, Journal of Urban Mathematics Education, 2022–2023. link–>
Series Editor, Lessons to Explore, Understand, and Respond to Social Injustice. Corwin Press, 2020–2022.
Editorial Board, Journal of Urban Mathematics Education, 2019–2021. link–>
Editor, The Lighthouse Almanac, 2017–2022. link–>
Editor, Proceedings of the Seventh Annual Mathematics Teacher Education Partnership Conference,
    2018. link–>
Editor, Proceedings of the Sixth Annual Mathematics Teacher Education Partnership Conference,
    2017. link–>
Editor, Proceedings of the Fifth Annual Mathematics Teacher Education Partnership Conference,
    2016. link–>
Editor, Monograph: Equity in Mathematics Education, The Mathematics Educator, Vol. 15, 2005. link–>
Editor, The Mathematics Educator, Vols. 12–13, 2002–2003. link–>

State & Regional

Member, Georgia Mathematics Advisory Council, GA Department of Education, 2020–present.
Member, Metro P–20 Collaborative, 2020–present.
Member, Steering Committee, Launch Years Initiative, GA Department of Education, 2020–2022.
Reviewer, Mathematics Standards Review, GA Department of Education, 2019–2020.
Co-Director, MTEP Team Georgia (4 institutions), the Mathematics Teacher Education Partnership,
Co-Director, MTEP CSU (22 institutions), the Mathematics Teacher Education Partnership, 2014–2016.
President, Greater San Diego Mathematics Council, 2011–2013.
Equity Committee, California Mathematics Council, 2010–2013.

University, College & Department

Department Curriculum Committee, 2021–present.
Information Technology Advisory Committee, 2018–2023.
Centers and Institute Committee, Office of Academic Affairs, 2019–2021.
Department Promotion & Tenure Committee, 2018–2019.
Departmental Faculty Council, 2017–2019.
Faculty Search Committee – Elementary Education (3 positions), 2017–2018.
Director, BSEd & MAT Secondary Mathematics Education programs, 2016–present.
Academic Appeals Committee, 2016–2018.