POST CARD (Amazing Science Games and Experiments)

Materials Required:

1. Scale and pencil
2. An old postcard
3. Scissors

Procedure:

1. Fold the postcard from the centre so that it may get divided into two parts.
2. Now cut the square from the fold as shown in the picture.
3. Make the lines with the pencil on the postcard as shown in the said picture.
4. Cut the above lines by scissors. Now open the postcard and see it becomes such a big thing that you can easily go through it.

This is what happens:

The way you have cut the postcard, you can see how strongly the strips are attached to one another you can easily go through it.