Ok, so a 3rd grade teacher at Adams has this on his board. Let's see if it shows up better on here then it did on Facebook. It's a math challange. You can only use the numbers 1-9 once. It is a 3x3 square. See if you can figure it out. Here it is:

____ + ____ - ____ = 4

- + +
____ - ____ + ____ = 8

+ - +
____ + ____ - ____ = 1

= = =

9 2 18