Search results for author:"Deborah Tatar"
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International Journal of Designs for Learning Vol. 5, No. 2 (Nov 03, 2014)
Historically, what people can learn is co-determined by the representational infrastructure for knowledge building. When Latin was the required medium of knowledge building, few could engage in scholarly activities; without the change to the...
International Group for the Psychology of Mathematics Education 4 (July 2005) pp. 71–78
Handheld devices, most familiar to educators today in the form of graphing calculators, are rapidly improving their interface, computational, and communication capabilities. Communication capabilities allow participants to rapidly share mathematical ...
The Role of Research on Contexts of Teaching Practice in Informing the Design of Handheld Learning Technologies
Journal of Educational Computing Research Vol. 30, No. 4 (Apr 01, 2004) pp. 353–370
One definition of design is "creating something new that fits with reality" (Stults, 1985). This article describes a project in which the researchers started with the intuition that new handheld-based wireless technologies held the promise of...
Journal of Computer Assisted Learning Vol. 21, No. 3 (June 2005) pp. 190–203
An important challenge faced by many teachers as they involve students in science investigations is measuring (assessing) students' progress. Our detailed requirements analysis in a particular school district led to the idea that what teachers need...
Journal of the Learning Sciences Vol. 17, No. 2 (April 2008) pp. 248–286
We report on the initial attempts at evaluating "at scale" a particular technological/curricular innovation that enables more students to develop deeper knowledge. The methods, issues, and findings of the current pilot experiment speak not only to...
Investigating Why Teachers Reported Continued Use and Sharing of an Educational Innovation after the Research Has Ended
Stephen J. Hegedus; Sara Dalton; Jeremy Roschelle; William Penuel; Margaret Dickey-Kurdziolek; Deborah Tatar
Mathematical Thinking and Learning Vol. 16, No. 4 (2014) pp. 312–333
We investigated prospects for reported sustainable adoption and sharing of an educational innovation through survey research including online questionnaires and telephone interviews. This investigation is part of the Scaling-Up SimCalc experimental...
Integration of Technology, Curriculum, and Professional Development for Advancing Middle School Mathematics: Three Large-Scale Studies
Jeremy Roschelle; Nicole Shechtman; Deborah Tatar; Stephen Hegedus; Bill Hopkins; Susan Empson; Jennifer Knudsen; Lawrence P. Gallagher
American Educational Research Journal Vol. 47, No. 4 (December 2010) pp. 833–878
The authors present three studies (two randomized controlled experiments and one embedded quasi-experiment) designed to evaluate the impact of replacement units targeting student learning of advanced middle school mathematics. The studies evaluated...