This is a great intro exercise for grade 9s, especially for grade 9s in the applied stream or ELS/ESL categories. It warms them up to oral participation in a new setting, while helping them to get to know their peers, and their teacher. It also a great formative assessment piece that gives you a basis for where they are at with their written and oral communication skills. Hint: They love it when their teacher participates too!
PDF version can be found here → Two Truths and a Lie