Practice plotting ordered pairs with this fun coordinate graphing Transcontinental Railroad/Western Expansion unit mystery picture. All points are represented by whole numbers/letters, there are no fractions or decimals. Students color in the boxes on the grid according to the coordinates (ordered pairs) and color key. The result will be an important event during the building of the Transcontinental Railroad.This is a variation on plotting points and connecting the dots. This graph art activity is perfect for math centers, early finishers, or homework.
Graphing grid paper, coordinates worksheets and answer keys are included.