The yoyo-bird: A transformative digital game for meaning making on trigonometric functions
Résumé
In this paper, we investigate students’ mathematical meanings developed while they played a digital
educational game on trigonometric functions. It is a two-player competitive game, called ‘the yo-yo
bird game’ and it was designed in MaLT2; a programmable Turtle Geometry software, affording
dynamic manipulation of variable values through the use of sliders. MaLT2 provides a space for
graphically and dynamically representing and manipulating models of mathematical concepts and
relations. Four students of the 11th grade played this game and their activity and discourse were
recorded. The UDGS model was used in order to frame and analyse the evolution of their meaning
making processes regarding trigonometric functions. Students’ continuously reconsidered game
strategies were connected to a cycle of using, discriminating, synthesizing and gradually generalizing
meanings on the mathematics embedded in the game.
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