Sea of Blue (Tiles)
![](https://mathwalks.org/wp-content/uploads/2018/03/20180222_135620-e1520554434198-604x270.jpg)
The facade of the Hall of State at Dallas Fair Park is awash in small blue tiles. As such, it provides an excellent opportunity for a fun element of almost any math walk: A Really Big Number. In this case, how many tiles are there on the facade? To get a handle on this, we […]