Maiy went over the Mountain, anybody recognise this scheme to help with writing letters?

[littleducks]

As the children write the letter they recite a rhyme, for 'M' it i Masiy went over the Mountain...does anyone know which sheme it is o i can get a book about it

TIA

my typing is terrible sorry (MAISY)

It's Read Write Inc. (Ruth Miskin) - great reading scheme!