Sit in a circle with the students holding an object that you want the children to be able to identify by name. Hand the object to the child on your right (whom you have already prepared) or to another adult to whom you have explained the game.

Say, "This is a fork." The child says, "A what?" shrugging elaborately.
You repeat, "This is a fork." The child repeats, "A what?!!" You repeat, "This is a fork!" The child replies, "Oh! This is a fork," and examines the object.
Then the child turns to the person on her right and repeats the process.

Continue around the circle till everyone gets a turn. Later, you can try using two objects so the children must say "these are" to learn about plurals.