caa a22 4500 44588181X CHVBK 20180317145546.0 cr unu---uuuuu 170323e20111101xx s 000 0 eng 10.1007/s10649-011-9315-4 doi (NATIONALLICENCE)springer-10.1007/s10649-011-9315-4 Designing spatial visual tasks for research: the case of the filling task [Elektronische Daten] [Margaret Sinclair, Ami Mamolo, Walter Whiteley] This article focuses on the development and problematization of a task designed to foster spatial visual sense in prospective and practicing elementary and middle school teachers. We describe and analyse the cyclical stages of developing, testing, and modifying several "task drafts” related to ideas around dilation and proportion. Challenged by participant non-actions and non-responses, we as task designers identified and anticipated sources of difficulties, which motivated repeated modification of the task to further the intended learning goals. The task in its present form incorporates numerous considerations including choices around materials, wording of questions and prompts, and sequencing of experiences. It also reflects our enriched understanding of exploration strategies and the roles of manipulatives and technology in spatial visual tasks designed for adult learners. Springer Science+Business Media B.V., 2011 Visual nationallicence Spatial nationallicence Geometry nationallicence Mathematics education nationallicence Teacher education nationallicence Task design nationallicence Sinclair Margaret York University, 4700 Keele St., M3J 1P3, Toronto, ON, Canada aut Mamolo Ami York University, 4700 Keele St., M3J 1P3, Toronto, ON, Canada aut Whiteley Walter York University, 4700 Keele St., M3J 1P3, Toronto, ON, Canada aut Educational Studies in Mathematics Springer Netherlands 78/2(2011-11-01), 135-163 0013-1954 78:2<135 2011 78 10649 https://doi.org/10.1007/s10649-011-9315-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10649-011-9315-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sinclair Margaret York University, 4700 Keele St., M3J 1P3, Toronto, ON, Canada aut NATIONALLICENCE 700 1- Mamolo Ami York University, 4700 Keele St., M3J 1P3, Toronto, ON, Canada aut NATIONALLICENCE 700 1- Whiteley Walter York University, 4700 Keele St., M3J 1P3, Toronto, ON, Canada aut NATIONALLICENCE 773 0- Educational Studies in Mathematics Springer Netherlands 78/2(2011-11-01), 135-163 0013-1954 78:2<135 2011 78 10649 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer