Zero and first conditionals are discussed. Zero conditionals express general truths using the present simple tense in both clauses. First conditionals express possible present situations using the present simple in the if-clause and "will" in the main clause. Examples are provided such as "If you expose it to the air, phosphorus burns" for zero conditional and "If it rains, I will stay at home" for first conditional. Exercises and a game to practice conditionals are also included.