Have your younger students bring toys, or pictures which have been cut out from magazines. Have the older students bring picture cut outs or real objects. The game goes like this:
Start with toys, pictures or objects that are masculine. After a while use those that are feminine, and then mix them up, so the students go from masculine to feminine without effort, then on to the plural form. Incorporate some main verbs into this game, such as the verbs avoir, aimer, vouloir, and prendre for example. You can also choose whichever verbs you want to. Here are some ideas. One child (A) shows her toy, picture or object to another (B) and says:
J’ai un livre. Est-ce que tu l’aimes? - I have a book. Do you like it?
B replies either “Oui, je l’aime or Non, je ne l’aime pas. If the reply is yes, then A says Est-ce que tu le veux? If the reply is yes, A then says Prends le and offers it to B. A then continues with a few more masculine objects then starts with the feminine form la; for example:
J’ai une orange. Est-ce que tu l’aimes? - I have an orange Do you like it?
As before, depending on B’s reply. A says
Tu la veux - Do you want it?
Depending on the reply, A says Prends la. A then moves on to the plural les by showing more than one object, for example,
J’ai des letters - I have some letters
Tu les aimes? - Do you like them?
Tu les veux - Do you want them?
Prends les - Take them
The same pattern follows with some feminine objects, for example:
J’ai des images - I have some pictures
You can expand the game utilizing all the personal pronouns, for example: Il a un stylo, and elle a une pomme. Je te vois, tu me vois, Il nous regarde, Nous vous gardons, Ils les ont, Elles les prennent.