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Number of items: **9**.

Hoyles, Celia and Healy, Lulu
(2007)
*Curriculum change and geometrical reasoning.*
In:
Theorems in school: from history, epistemology and cognition to classroom practice.
Sense, Rotterdam, pp. 81-115.
ISBN 9077874216 (pbk.)

Hoyles, Celia and Küchemann, Dietmar and Healy, Lulu and Yang, Min
(2005)
*Students' developing knowledge in a subject discipline: insights from combining quantitative and qualitative methods.*
International Journal of Social Research Methodology, 8 (3).
pp. 225-238.
ISSN 1364-5579

Healy, Lulu and Hoyles, Celia
(2002)
*Software tools for geometrical problem solving: potentials and pitfalls.*
International Journal of Computers for Mathematical Learning, 6 (3).
pp. 235-256.
ISSN 1382-3892

Healy, Lulu and Hoyles, Celia
(2002)
*A study of proof concepts in algebra.*
In:
Lessons learned from research.
National Council of Teachers of Mathematics, Reston, VA, pp. 183-190.
ISBN 087353526X

Hoyles, Celia and Healy, Lulu
(2001)
*From construction to deduction: potentials and pitfalls of using software.*
In: UNSPECIFIED.

Healy, Lulu and Hoyles, Celia
(1999)
*Visual and symbolic reasoning in mathematics: making connections with computers?*
Mathematical Thinking and Learning, 1 (1).
pp. 59-84.
ISSN 1098-6065

Noss, Richard and Healy, Lulu and Hoyles, Celia
(1997)
*The construction of mathematical meanings: connecting the visual with the symbolic.*
Educational Studies in Mathematics, 33 (2).
pp. 203-233.
ISSN 0013-1954

Pozzi, Stefano and Healy, Lulu and Hoyles, Celia
(1993)
*Learning and interaction in groups with computers: when do ability and gender matter?*
Social Development, 2 (3).
pp. 222-241.
ISSN 0961-205X

Healy, Lulu and Pozzi, Stefano and Hoyles, Celia
(1990)
*Interdependence and autonomy: aspects of groupwork with computers.*
In:
Learning and Instruction: European research in an international context.
Pergamon, Oxford, pp. 239-257.
ISBN 0080402526