Divide the class at least into 3 groups. Each group choose a number in turn and under each number a statement appears. The groups decide which one is the fact. In this way they practice comparative adjectives. You can ask them to repeat the sentences. It is up to you how you give the groups points for their right answers but I do it like this. I give them a choice. If they say they are sure and if they know it they get 2 points but if they give a wrong answer the other groups get 1 point. When they say they are not sure and they know it, they get only one point. But from the wrong answer the other groups don't get anything.