How to Make a Paper Periscope

Step-by-Step Instructions

1. 1

   Place the A4 paper portrait, white side up.

2. 2

   Fold the left edge over about 6 cm.

3. 3

   Fold the right edge over about 6 cm overlapping the left fold.

4. 4

   Crease firmly to form a rectangular tube shape.

5. 5

   Tuck one edge into the other to lock the tube without tape.

6. 6

   Flatten the tube and at the top, cut a diagonal slit at 45 degrees across one face.

7. 7

   At the bottom, cut another diagonal slit at 45 degrees on the opposite face, angled the other direction.

8. 8

   Cut two small squares of paper about 5 cm each.

9. 9

   Fold each square diagonally to create reflective angled surfaces.

10. 10

    Insert one angled square into the top slit at 45 degrees facing down into the tube.

11. 11

    Insert the second angled square into the bottom slit at 45 degrees facing the viewing hole.

12. 12

    Look through the bottom opening — light enters the top, bounces off both angled surfaces, and reaches your eye.

Frequently Asked Questions