TOOLS: The Sumerians made tools such as the plow, saw, chisel, and the lever pulley. They made tools out of stone, iron, and bronze. They used these tools to do tasks such as farming, building, and crafting.

ASTRONOMY: The Sumerians used astronomy to calculate time. The calculated time by using a sundial. They also used astronomy to tell days months and years. They also counted time by using 60 second intervals

CONTRIBUTIONS