Play a game where you and your child have to remember to say "one" when there is only one of something left. If you're eating carrot sticks, say "one" when there is only one left on your plate. If your're cleaning up toys, say "one" before you put the last one away. If you're setting the table together, don't forget to say "one" when you only have one plate or spoon left to put down.
One sun up in the sky;
One airplane way up high;