In this lesson we will learn how to estimate the total distance travelled from a curved velocity/time graph.  You must be able to calculate the distance from a v/t graph before trying this lesson.  You also need to be able to calculate the area of a reactangle, triangle and trapezium before trying this lesson.  If not then watch the following lessons in Geometry and measures:  Calculating the total distance travelled from a v/t graph and/or calculating the area of a rectangle and/or calculating the area of a triangle and/or calculating the area of a trapezium.