* How_to_use

The graph illustrates the proportional relationship between time and distance. If the mouse pointer is close to a line, it changes color and can then be selected. You can revolve the line by dragging. Note that the line represents the proportional relationship between two objects, time and distance.   Next, you can select a point on the line and move that point along the line. This material enables participants to experimentally learn the relationship between two objects




* MOVE_OBJECT(Moving a line or a point)

Move the mouse close to any point or any line. If the object starts blinking or changes its color to red, you can move that object by dragging


