Han-han

 Hannah keeps writing me notes, but she writes "Han" near the right side of the page then runs out of space and writes the next line backwards "han" like a horseshoe.

She's been writing her name like this for a while now.

So I called her "Han-han" to tease her, and when she asked why, I explained that her writing spelled "Han-han". Immediately she thre away all my notes and wrote me a proper one, correctly spelling her name

Success!!

Teasing, a daddy's tool for teaching!