It is found that the early people used tools which were made by following ways :
Stone on Stone technique: In this technique, one stone was made with the use of another stone. The stone which was to be developed as a tool was taken in the hand and another stone was used as a hammer. The stone used as a hammer was used to strike off flakes from the first stone. This process was repeated till the required shape was obtained.
Pressure flaking: In this technique, the stone or bone was put on a hard surface and hammer stone was used for flaking off stone or bone. By the removal of flakes, stone or bone became a tool.