Copy of Definite Integral - finding the area under curve

This GeoGebra dynamic worksheet is to approximate the area under a curve by considering the upper rectangle sum and the lower rectangle sum.
1. Tick the Uppersum checkbox and drag slider for NoofRectangles to visualize the effect. Untick the checkbox on completion.[br]2. Tick the Lowersum checkbox and drag slider for NoofRectangles to visualize the effect. Untick the checkbox on completion.[br]3. Tick the Area checkbox and compare with the Uppersum and the Lowersum.[br]4. You may change the Lowerlimit and the Upperlimit.[br]5. You may also change the function by typing in the input box next to f(x)=.
– Markus Mattila, Mak Desmond

Information: Copy of Definite Integral - finding the area under curve