Problem:

 

From the center of the grid, go 4 units right, and mark the point; go 4 units down, and mark the point; go 4 units left, and mark the point; go 4 units up, and mark the point. Connect the points in the order that you drew them. What shape do you get?

 

                                    

 

 

Answer:  A square

                                     

 

 

Teacher Notes:

Using grids and developing fundamental ideas and strategies for navigating them are important components of discrete mathematics.4

4 National Council of Teachers of Mathematics (2000).  Principles and standards for school mathematics (pp.165–168).  Reston, VA