The Stone Age was divided into three periods. The three periods are as follows:
1. Palaeolithic or Old Stone Age: This period lasted from early times till about 10,000 BC.
2. Mesolithic or Middle Stone Age: This period lasted from about 10,000 BC to 8,000 BC.
3. Neolithic or New Stone Age: This period lasted from 8,000 BC to 4,000 BC.
The characteristics of tools of the above mentioned periods of Stone Age are:
1. Palaeolithic Age: Crude stone tools were made and used during this period.
2. Mesolithic Age: The stone tools of this period also known as microliths, were smaller, sharper and more efficient than those of the earlier period. Stone, animal bones and horns were used in this age.
3. Neolithic Age: The tools of this age were sharper than those of the Middle Age. They were also polished to sparkle.