In a distance-time graph, the gradient of the line is equal to the speed of the object. The greater the gradient (and the steeper the line) the faster the object is moving.

You have waited long enough. It is now time for another Angry Birds post. Today, it is the yellow bird's time. To start, an Angry Birds haiku: The Sun and sky, still. Green pigs cackle with delight.

The area under a curve can be estimated by dividing it into triangles, rectangles and trapeziums. If we have a speed-time or velocity-time graph, the distance travelled can be estimated by finding the ...