Editorial: In praise of pessimism-the need for negativity in educational technology
British journal of educational technology, 2011-09, Vol.42 (5), p.713-718 [Peer Reviewed Journal]2011 The Author. British Journal of Educational Technology © 2011 BERA ;ISSN: 0007-1013 ;EISSN: 1467-8535 ;DOI: 10.1111/j.1467-8535.2011.01215.x ;CODEN: BJETAH
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