In the first meeting, students were given teaching material about the concept of the tangent gradient of the curve is the same as the first derivative of the function which also is m = ′()=ℎ→0(+ℎ)−()ℎ In the second meeting, students were given teaching material about concepts of the function graph will rise when ′()>0, stationary when ′()=0 and the graph will go down when ′()