This clip explains linear equations and how the equation influences the slope of a line on a graph.

Teacher Dawn teachers her students about linear equations. She graphs the relationship between incentive and productivity on a coordinate plane with the equation y = 1.5x. She jokes that they can ask for a greater incentive to make a higher allowance.

High school teacher Mr. Jaime Escalante teaches his students about negative and positive numbers. He uses a real-world example of digging into sand at the beach to help students understand the concept.

This clip explains how the slope equation is mapped on a coordinate plane and how the different variables, such as x, influence the mapping of the line. It also explains the slope-intercept form of the equation, y = mx + b.

The straight line competes with the squiggly line to become more fun and win the heart of the perfect circle. The straight line eventually learns how to create angles and complex shapes in order to win over the circle.