This applet explores finding the antiderivative graphically, thinking of the integrand as representing the slope of the antiderivative in calculus. Interactive calculus applet.

Slope fields provide a way to visualize first-order differential equations and get a feel for the family of solutions. Interactive calculus applet.

Definiton of the equation of a straight line, in 'point - slope' form: y = m(x-Px) + Py

Definiton of the equation of a straight line, in 'slope and intercept' form: y = mx+b

Introduction to the concept of lines in coordinate geometry.

Definition of the slope of a line given the coordinates of two points on the line, includes slope as a ratio and an angle.