PARABOLA

What is parabola? Where this appear? What is the use of  it? Why we study conic sections and the parabola? These are the general question arise in students mind. And the answer is just question and answer of various label i.e. easy to very difficult. After doing a lot of problem students get nothing. As a result students lose their interest and forget in time span.
Study of parabola , ellipse and hyperbola must be based on reality. Teacher must visualize these conics in their surrounding. For example, there is a hanging bridge on the river Ganga in Rishikesh. The bridge has no pillars. A long iron rope is tied with two poles situated on two banks of the river and the whole bridge is hanging with some vertical supporting ropes. The long iron rope which is tied with two pillars and the vertical ropes takes the shape of a parabola.