Wed, 31 Oct 2012 14:37:00
Sal has created new algebra videos to explain solving systems of equations:
Trolls, Tolls, and Systems of Equations
Then check out the follow-up videos on Solving the Troll Riddle Visually and Solving Systems Graphically.
The King’s planning a party and needs your help figuring out how many cupcakes to order.
King’s Cupcakes: Solving Systems by Elimination
This video leads into the first exercise on elimination, which has a new guide video: Simple Elimination Practice.
Then, the King needs more party planning help in managing The Potato Chip Issue:
How many bags of potato chips do people eat?
This leads into the next exercise on elimination, which also has a new companion video.
Next, a little bird visits the King to teach him a new solving method: substitution.
Talking bird solves systems with substitution
The exercise using substitution has a new companion video.
Solutions to Systems
Sal then investigates special situations you may run into, including systems without a solution:
Inconsistent systems of equations
and systems with infinite solutions:
Infinite solutions to systems
Our exercise on how many solutions a system of equations has also comes with a new companion video.