Titus, Sneha and Ghosh, Jonaki B.
(2013)
In a dynamic geometry environment: Exploring problems in geometry.
At Right Angles, 2 (1).
pp. 4448.
Abstract
In the articles on Pólya in this issue, a key ingredient listed in his recipe for successful problem solving is persistence. Would a 21st century student exercise greater persistence in problem solving if, instead of paper and pencil, the medium used was technology? A dynamic geometry software (DGS) allows the user to
construct an object and explore its properties by dragging its component parts. Under different dragging modes, certain properties of the object remain invariant while others may vary. In particular, the logical dependencies are preserved. Observations regarding the
object can be made through measurement in the algebra view. For example, by dragging the vertices of a triangle the user can ‘see’ in the algebra panel that the sum of its interior angles remains 180° irrespective of the lengths of the sides or shape of the triangle.
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