Caring for the environment is everyone's responsibility

In a Dynamic Geometric Environment (DGE), conjectures can be generated by manipulating shapes using different dragging strategies. One of the focuses of various studies has been a strategy (holding drag) that involves inducing a specific geometric property and trying to maintain it. In this article, I focus on kidnapping and evidence in this conjecture generation process. I discussed the special nature of the kidnapping process, in relation to holding on to drag (meter kidnapping). With regard to other forms of abduction reported in the literature, I emphasize their critical role in bridging phenomenological and theoretical evidence. Results of the analysis of the case study show that using hold-in-drag leads students to generate conjectures with solid phenomenological evidence