Early man’s tools and weapons were made of stones. Early man used hard stones known as flint, along with other types of stones for making tools and weapons. Flint was the stone that was used for lighting fire. It was also found that these types of stones can be given desired shape. However, the tools that early man used were rough and unpolished. We get the earliest evidence for making and use of these stone tools from Ethiopia and Kenya. The Australopithecus were the first to make and use stone tools. The stone tools were made by using following techniques: Stone on Stone: In this technique, the pebble from which the tool was to be made was held in one hand and the second stone was used to strike off flakes from the first. Pressure Flaking: In this technique, the core was placed on a firm surface. The hammer stone was used on a place of bone or stone that was placed on the core to remove flakes that could be shaped into tools. The Punch Blade Technique: In this technique, the top of a larger pebble is removed by using hammer stone to produce a flat surface. This flat surface, thus so produced, is called striking platform. This is then struck using a hammer and a punch made of bone. It then leads to the production of blades. It also leads to formation of knives.