Design-based research: An emerging paradigm for educational inquiry Design-Based Research Collective Educational researcher 32 (1), 5-8, 2003 | 1547 | 2003 |
Supporting online PBL: Design considerations for supporting distributed problem solving CH Orrill Distance Education 23 (1), 41-57, 2002 | 122 | 2002 |
Building technology-based, learner-centered classrooms: The evolution of a professional development framework CH Orrill Educational Technology Research and Development 49, 15-34, 2001 | 116 | 2001 |
Measuring mathematical knowledge for teaching fractions with drawn quantities A Izsák, E Jacobson, Z De Araujo, CH Orrill Journal for Research in Mathematics Education 43 (4), 391-427, 2012 | 92 | 2012 |
Making sense of double number lines in professional development: Exploring teachers’ understandings of proportional relationships CH Orrill, RE Brown Journal of Mathematics Teacher Education 15, 381-403, 2012 | 84 | 2012 |
Learning objects to support inquiry-based, online learning CH Orrill The instructional use of learning objects 25, 2002 | 80 | 2002 |
Mathematics teachers' reasoning about fractions and decimals using drawn representations SJ Lee, RE Brown, CH Orrill Mathematical Thinking and Learning 13 (3), 198-220, 2011 | 70 | 2011 |
Measuring middle grades teachers' understanding of rational numbers with the mixture Rasch model A Izsák, CH Orrill, AS Cohen, RE Brown The Elementary School Journal 110 (3), 279-300, 2010 | 58 | 2010 |
Framing a robust understanding of proportional reasoning for teachers T Weiland, CH Orrill, GG Nagar, RE Brown, J Burke Journal of Mathematics Teacher Education 24 (2), 179-202, 2021 | 51 | 2021 |
Implementing Reform Curriculum: A Case of Who's in Charge. CH Orrill, HG Anthony | 45 | 2003 |
Disciplined inquiry and the study of emerging technology CH Orrill, MJ Hannafin, EM Glazer Handbook of research on educational communications and technology 2, 335-353, 2004 | 40 | 2004 |
Middle school teachers’ knowledge of proportional reasoning for teaching J Lobato, C Orrill, B Druken, E Jacobson Annual Meeting of the American Educational Research Association (AERA), New …, 2011 | 38 | 2011 |
Developing technological pedagogical and content knowledge (TPACK) through professional development focused on technology-rich mathematics tasks D Polly, C Orrill Meridian 15, 2012 | 37 | 2012 |
Integrating technology into teaching: The technology and learning continuum A Recesso, C Orrill Houghton Mifflin, 2008 | 32 | 2008 |
What learner-centered professional development looks like: The pilot studies of the InterMath professional development project. CH Orrill Mathematics Educator 16 (1), 4-13, 2006 | 32 | 2006 |
Engaging students through technology AK Erbas, S Ledford, D Polly, CH Orrill Mathematics Teaching in the Middle School 9 (6), 300-305, 2004 | 28 | 2004 |
Middle school teachers’ use of mathematics to make sense of student solutions to proportional reasoning problems E Jacobson, J Lobato, CH Orrill International Journal of Science and Mathematics Education 16 (8), 1541-1559, 2018 | 27 | 2018 |
Designing professional development to support teachers' TPACK in elementary school mathematics D Polly, CH Orrill Handbook of technological pedagogical content knowledge (TPACK) for …, 2016 | 27 | 2016 |
Mathematics teachers’ ability to identify situations appropriate for proportional reasoning T Weiland, CH Orrill, RE Brown, GG Nagar Research in Mathematics Education 21 (3), 233-250, 2019 | 26 | 2019 |
Mathematics teachers’ use of knowledge resources when identifying proportional reasoning situations RE Brown, T Weiland, CH Orrill International Journal of Science and Mathematics Education 18, 1085-1104, 2020 | 24 | 2020 |