| Old Stone Age | Middle Stone Age | New Stone Age |
| 1. Tools were crude as these made by the percussion technique | 1. The quality of tools improved. Homo sapiens brought about a revolution in technique of making tools. | 1. The tools were polished and had smooth and shiny finish as new type of tool-making technique was developed. |
| 2. Chopper, hand-axe and clearer were made. | 2. Different tools were used for different kinds of work. | 2. Tools were mainly made for agricultural work as hunting had become a secondary activitiy. |
| 3. Large stones and their flakes were rather heavy and odd in size. | 3. Tools were light weight, durable proportionate and symmetrical. | 3. Tools were light weight, durable, proportionate, symmetrical and efficient. |
