[b]Sliders for changing the following:[/b][br]1. Radius of the circle,[br][br][b]Blue dots for changing the lengths of the chords:[/b][br]1. BC.[br][br][b]Pre-requisite knowledge and terms:[/b] Perpendicular bisector, Chord[br][br][b]Task:[/b] Explore and manipulate the applet. Make a conjecture on the property of the chord and record it in your class wall. [br][br][b]Questions to guide in Investigation 1: [/b][br][br]1a) For the various lengths of the chord BC, what can you say about the lengths of BD and DC? Why do they behave so? [br][br]1b) Where is the centre of the circle located? Is it true for various lengths of BC?[br][br]1c) What is your conjecture of the property of the chord here? Write it on your class wall.