Supporting the Development of Mathematics Teacher Educators through Lesson Study.Published in:Investigations in Mathematics Learning, 2021, v. 13, n. 2, p. 125, doi. 10.1080/19477503.2020.1865029By:Barlow, Angela T.;Pair, Jeffrey D.;Hartland, Kristin;Schmidt, Teresa A.;Kassaee, Ameneh M.;Woodard, Cicely A.Publication type:Article