An Archimedean balance: polygons on the head of a pin. (English)
Math. Teach. (Reston) 107, No. 4, 313-317 (2013).
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ME 2013e.00124 Clarke, Doug;
Roche, Anne;
Wilkie, Karina;
Wright, Vince;
Brown, Jill;
Downton, Ann;
Horne, Marj;
Knight, Rose;
McDonough, Andrea;
Sexton, Matthew;
Worrall, Chris
Demonstration lessons in mathematics education: teachers’ observation foci and intended changes in practice. (English)
Math. Educ. Res. J. 25, No. 2, 207-230 (2013).
2
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