Number Relations

Let's start learning by picking a lesson:

• What does equal mean?

• What is an unknown?

• Understanding Simple Inequalities (Part 1)

• Understanding Simple Inequalities (Part 2)

• Understanding Simple Inequalities (Part 3)

• More on Inequalities

• Solving Equations

• Equations with Two Variables

• Solution Points

• Straight Lines and Their Equations

• Plotting A Straight Line

• Solution of Linear Equations (demo of equation input and plotting, IE only)

• Ploting of y=f(x) (demo of equation input and plotting, IE only)