They are pretty simple sentence prompts for Grade 2, so the expectation for my class is that they "stretch" their sentences (add more details). The boys LOVE playing this as a centre... any excuse to throw something!! Of course, we went over "tossing"/what was ok to do in school vs. throwing the cube across the classroom.
I bought my cubes at a teacher supply store, but I have since found the exact same ones online at amazon here. I love them!