This is a professional development podcast for teachers created by students. In this episode, students show teachers why they should use Twitter and how easy it is to sign up.

Kyle, Ashkon, Daniel, and Kevin explain how to solve Systems of Equations Word Problems.

Milad, Freddy, Costa, Joe, and Andrew explain integer exponents.

Ethan, Austin, and Steve explain scientific notation.

Jasmine, Dakota, and Brittany explain how to solve systems of equations using elimination.

Annie, Caelin, and Arianna explain how to apply systems of equations to motion problems.

Mr. Williams explains how to solve systems of equations using the addition method (aka- linear combinations or elimination).

Mr. Williams explains how to solve the linear system

x+2y=-1 and x-y=5.

Mr. Williams explains how to solve a linear system using substitution.

Mr. Williams explains perpendicular lines. Example problems explain how to determine if two lines are perpendicular.