What French books do you use

[SugarPlumpFairyCakes]

for teaching your dcs French at home?

How old are they? Do you speak French at all or have any interest in learning? I think it would be a good idea if you were to be learning alongside them.

I would use an app - I used Duolingo for 5 years for Spanish and it was fine to get started (for the first 2-3 years) but I have also had subscriptions for Babbel and to Lingodeer and prefer both of those - they are what I use now. But it's my conclusion too - that you need other resources. Are there any recommended texts from school or is this not being driven by the school? Maybe your DCS are at primary.

CGP Salut! Is used in the primaries around here - you can get a subscription and download all four years of it for KS2.

What age? And what level? Are you teaching them and do you speak French? Sorry, lots of questions!

This one is really excellent
https://www.amazon.co.uk/Studio-Edexcel-Grammar-Translation-Workbook/dp/129213299X

How good is your own french?

My DD is learning French. She uses duolingo for about twenty minutes a day and is making pretty good progress. When she started though she had very limited experience typing (she's 8, 7 when she started) and that was frustrating for her and made everything rather slow.

Now she's been doing it a year I'm starting to read simple books with her - I read her a page, we work out what the phrases mean from her knowledge (many i just had to tell her to start with as word-for-word translation is obviously pretty limited). We've been doing the French versions of the Mr Men and Little Miss books - they are quite challenging for someone with one year of French, but a lot of phrases and vocabulary is repeated between books.
My French is not brilliant by any means. I listen to the book online first before I do it with her. Most are available for free, those that arent I type into Google translate a page at a time (they really arent long).

It really depends a lot - what age child, your skill, what they already know, why they are learning it e.g. do you want them comfortable, or will they be taking a particular qualification at some point? Do they need to write it well, or just speak/converse well?