def construct(self):
    self.add_graph_and_integral()
    self.show_f_dx_sum()
    self.show_rects_approaching_area()
    self.write_antiderivative()
    self.write_fundamental_theorem_of_calculus()
    self.show_integral_considering_continuum()
    self.show_antiderivative_considering_bounds()
def construct(self):
    self.add_graph_and_integral()
    self.show_f_dx_sum()
    self.show_rects_approaching_area()
    self.write_antiderivative()
    self.write_fundamental_theorem_of_calculus()
    self.show_integral_considering_continuum()
    self.show_antiderivative_considering_bounds()