Based on the discussion you watched, which are the best examples of collaboration among the
participants? check all that apply.
they all waited for their turns to speak.
they acknowledged each other before adding their own ideas.
they shook their heads and looked down when they disagreed.
they weren't interested in hearing different perspectives.
they spoke politely but weren't afraid to ask for clarification or express another view.
done

The greatest gift the sumerians gave the world was the invention of writing. the sumerians were wealthy people. they needed some way to keep track of what they owned. they began drawing pictures. they used a reed as a pen. they drew on soft pieces of clay. the soft clay was then dried in the sun. the tablet became a permanent record. later, the sumerian drawings changed into wedge-shaped symbols. this kind of writing is called cuneiform. by putting symbols together, the sumerians could write entire sentences.