The Mesopotamians gave great contributions in the realm of science. In fact, their contributions in the scientific area can be ascribed to their writing. For science, written material is necessary. Only then future generations of scholars can read it, understand it and improve it. The Mesopotamians have made great contributions in calendar-making, to x the time of things and mathematics.

In Mathematics they discovered multiplication, division, square, square root and compound interest. Some clay slates where these things are recorded have been discovered. The square root they discovered differs only very slightly from the actual one.

Based on the rotation of the moon around the earth, a year was divided into 12 months, a month was divided into 4 weeks, and a day was divided into 24 hours, and an hour was divided into 60 minutes. This was a Mesopotamian discovery. Thus the calendar which was based on the lunar movement has been approved and accepted by the whole world.