From Semi-Proof to Proof: Motivating Deductive Thinking Through Inductive Exploration

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Moshe Stupel
David Ben-Chaim


In this short article, the authors introduce and prove a geometrical property involving externally tangent circles. Using an applet to model the problem situation, the authors illustrate how GeoGebra applets can serve as an accelerator of understanding, helping aid in the progression from inductive to deductive proof.

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