Roundtable is a good cooperative structure and interactive activity to practice vocabulary, grammar, or even content. Students pass a paper around, adding an item according to the criteria you designate. It is similar to Roundrobin, which is an oral chain activity. In Roundtable, each student says a response, writes it on the page, and passes it on. You may want to brainstorm possible substitutions first.

Procedure:
Divide the class into rows or groups. Prepare a sheet of paper for each group with the target language or question on top. The teams use the cooperative structure Roundtable to substitute words or phrases for the underlined word, or to add words or phrases to a list.