Teacher describes a fish and the students guess which fish is being described. Then the students write their own riddles and present them to the class. Students make up their own fish, describe its personality traits and present it to the class. Students look at example aquariums, determine if the fish and other animal life forms are compatible and discuss what to add or remove and why. Students take imaginary trip to fish store and examine aquariums.
Students discuss why prices are the way they are.
Discuss important aspects of establishing and maintaining an aquarium. Perhaps there is someone in the community who is a specialist and speaks the target language. Students make a list of fish they would like in their aquariums keeping in mind traits and cost. They need to stay within the budget determined by the class. It may be useful to have the students sketch out a possible layout and then create a list of materials needed.