Thomas M. Duffy

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cover image of Learner-Centered Theory and Practice in Distance Education

Learner-Centered Theory and...

Thomas M. Duffy Editor
Jamie R. Kirkley Editor
(2003)

cover image of Designing Usable Texts

Designing Usable Texts

Educational Technology (Series)

Thomas M. Duffy Editor
Robert Waller Editor
(2014)

cover image of Constructivist Instruction

Constructivist Instruction

Sigmund Tobias Editor
Thomas M. Duffy Editor
(2009)

cover image of Constructivism and the Technology of Instruction

Constructivism and the...

Thomas M. Duffy Editor
David H. Jonassen Editor
(2013)