What are the connections between communication and understanding of mathematical concepts? This is what we will work on in this section as we tackle a math problem for ourselves.

Here is a problem involving multiple representations of functional relationships.

Here is a pattern of designs built from square tiles:

• How many tiles did you need to build the next term of this sequence?
• What about the 10^th term? the 100^th term?
• Write a function rule that will tell you the total number of tiles you need (T) to build the n^th term.
• How does the function rule relate to the appearance of the tile pattern? Can you arrange the tiles differently within this rule?

  Communicate about the tiles problem