<iframe width="580" height="385" src="https://www.youtube.com/embed/AN4MGUP4VXQ" frameborder="0" allowfullscreen></iframe> <br>This video provides an introduction to algebra tiles, and how they can be used to model a variety of algebraic processes in the ... <br><a href="https://www.youtube.com/watch?v=AN4MGUP4VXQ">source</a>
