I heard this great little tidbit last Friday where a very learned teacher said that if you want to teach your children anything, do it in multiples of 7. So in this case for example, repeat an ayah 7 times, then leave it…
Have tried implementing it since then and it seems a good tip – as well as the deeper significance that I’m sure lies behind it, any more and they switch off to be honest!
P.S. Came across this video which repeats Ayatul Kursi 100 times! Ideal to play at night while they sleep perhaps?