Average gradient and formula, gradient at a point, limits, limit examples, using limits to find the gradient at a point, instantaneous gradient, first principles & examples, differentiation notation & rules, find the pint given the gradient, equation of the tangent, standard form of cubic graph, turning point from a cubic graph, sketching cubic graphs, point of inflection, maxima & minima, speed velocity & acceleration, many examples. Excellent for classroom teaching with a data