Final answer:
The Sumerians used stone tablets and a stylus to write with, creating wedge-shaped symbols known as cuneiform writing.
Step-by-step explanation:
The Sumerians used stone tablets and a stylus to write with. They would press a stylus made of reed into wet clay tablets to create wedge-shaped symbols, known as cuneiform writing. These clay tablets would then be dried or fired to make them durable and permanent.