Fun is the key to learning.
We have been home educating our son for just over a year now. It has taken a lot of the stress out of the leaning process (school runs, deadlines, the stress from the teachers of new targets, etc...not to mention bullying.) We all know it is hard to take in new information and concentrate when we are stressed, so it is not surprising to us the children are not thriving in schools.
We focus maths and English around his interests and he is so much more engaged and happy. This is because he sees it as fun, not a lesson, something he has to do and complete or else.... as it was in school.
As I know no one can teach anyone anything, we all just learn things by being exposed to them or because we have an interest in them. We don't teach our babies to walk nor to talk they just learn to do it by exposure. So I have always exposed my son to French, rather than teach it, and this is is how I ended up writing my bilingual book, so as a baby he had the same nursery rhymes in English and French.
More recently I have been reading some French children's magazines called Pomme D'api and he has really taken to the adventures of a little super hero called Sam Sam, after I noticed there was a link to one of songs in the story. Having seen the cartoons he now wants to see one every night as part of his bed time routine and along with the the other stories in the magazine.
This makes exposing him to French so easy and fun for both of us.
Here is a link to one of the many Sam Sam you can find on Youtube
I hope your little ones enjoy them too.