To review songs for this year’s children’s sacrament meeting presentation, make several large keys (at least one for each song to be reviewed). Write the names of the songs to be reviewed on the keys.

Invite a child to choose a key and ask him to wait outside the Primary room.
Have the Primary help you choose a keyword from the song chosen.
This will be the word they will not sing in the song. Write the word on the blank side of the key.
Invite the child to come back in. Hold the keyword above the child’s head as a reminder to the others of which word not to sing.
As the Primary sings, ask the child to listen for the keyword that is missing.
Let the child guess which word is missing.

Review the gospel principle in the song.

Repeat for the other songs to be reviewed.