Collage is an assemblage, a piece of art made by sticking together a variety of materials. It began when paper was invented in China 200BC.

Picasso used collage in his art.

Henri Mattise used scissors to create art.

Henri Matisse.
This simple collage was created by cutting magazine photographs and reassessing them.
These are the tools I use, a cutting mat, a sharp craft knife, tweezers, a crinkle gadget, double sided sticky tape.
A very simple collage using different coloured papers, cutting and sticking.
At the end of the day. A slightly more complex collage using a variety of materials.