Full Terms & Conditions of access and use can be found at http://www.tandfonline.com/action/journalInformation?journalCode=rtde20 Teacher Development An international journal of teachers' professional development ISSN: 1366-4530 (Print) 1747-5120 (Online) Journal homepage: http://www.tandfonline.com/loi/rtde20 Examining focus, duration, and classroom impact of literacy and mathematics professional development Christie Martin, Drew Polly, Maryann Mraz & Robert Algozzine To cite this article: Christie Martin, Drew Polly, Maryann Mraz & Robert Algozzine (2019) Examining focus, duration, and classroom impact of literacy and mathematics professional development, Teacher Development, 23:1, 1-17, DOI: 10.1080/13664530.2018.1530695 To link to this article: https://doi.org/10.1080/13664530.2018.1530695 Published online: 17 Oct 2018. Submit your article to this journal Article views: 43 View Crossmark data