Browsing by Subject "Design"
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Revisiting some design criteria
(Athens Institute for Education and Research, 2015)We address the problem that the A (trace) design criterion is not scale invariant and often is in disagreement with the D (determinant) design criterion. We consider the canonical moment matrix CM and use the trace of its ... -
What’s a real 2D shape? Designing appropriate geometric instruction
(AAMT [Australian Association of Mathematics Teachers], 2015)Mairead Hourigan and Aisling Leavy describe a range of teaching and learning activities focusing on the identification and classification of 2-dimensional shapes. The activities described are useful in highlighting students’ ...