Watch the video [url=https://youtu.be/hfvegyZXh-o]https://youtu.be/hfvegyZXh-o[/url] "[b]Chocolate Bar Paradox[/b]".[br][br]Check the "Cut the chocolate bar" box. Drag the pieces according to the video and see where the extra piece of chocolate comes from.

Anthony Or[br]GeoGebra Institute of Hong Kong