Describing graph shapes
This is an activity I have used with year 7 classes to help them improve their skills in describing graphs, though it could easily be used for other year groups as well.
The students sit face to face, one with sheet one and one with sheet two. They take it in turns to describe the graph shape that they can see, but they are limited in the words that they are allowed to use. The other person has to sketch the graph that is being described. They can then compare to see how well they did.