The finger family works through a 'catch-and-keep' mechanic. We can also use interesting topics for children like finger family animals and nursery rhymes. If a child knows how to make a gesture with one of their fingers, like for example pointing with the index finger, another person can hold that gesture and say "this little finger says /s/". The child will remember when to make the gesture because it will look like they are saying /s/. On top of that, you can ask them to say "point /s/".