How possessive adjectives must agree in gender and number with the item or person that is they refer to. We learn that, in order to select the correct version of the possessive adjective, we need to first establish the gender of the object or person that we are referring to, then decide whether it is singular or plural. Then we can make an informed decision, as to which possessive we need to use. Words that begin with either a vowel or a silent “h” and are feminine need to be treated as if they are masculine singular, in order to make pronunciation easier.
A class might use an image of a room, where a crime has taken place and place twelve items in various positions within the room. A partner must guess where each of the twelve items is and is allowed two guesses per item. Ton stylo est sur ta table? Non, mon stylo n’est pas sur la table.