Introduced skip counting by 7 on Friday but he refused to sing along, saying this is Twinkle Twinkle Little Star and I should not change the lyrics.
I gave up, after all, he has few more years to learn/memorize them. I was just feeling a little bored on the moving bus so I started humming the song. Felt silly? Yeah.
And guess what, he is singing the song happily while waiting for school van few hours ago.
One more to go and we are all set to recite skip counting by 2 to 12.