* A sheet of white paper
* A red marker
* A blue marker
Instructions:
1. Cut the sheet of white paper into two equal rectangles.
2. Fold each rectangle in half lengthwise.
3. Unfold the rectangles and glue them together along one of the long edges, so that you have a square piece of paper.
4. Fold the square in half diagonally twice.
5. Unfold the square and draw a red diagonal line from the top left corner to the bottom right corner.
6. Draw another red diagonal line from the top right corner to the bottom left corner.
7. Colour in the top left and bottom right triangles blue.
8. Let the glue dry completely before hanging your Union Jack flag.