I am also amazed that there is a working knowledge given that most state primaries if lucky do a lesson a week learning animals, colours etc
Most year ting a new 7 language classes are starting and working way through a new textbook which starts with personal ID je m'appelle j'ai onze ans j'habite a etc then do different topic based chapters with a vocab list to learn and a grammar box....
The best online resource I know is the wonderful languages online/royal grammar school in high wycombe. It is brilliant for learning vocab by games on the computer - word matching, quickspell or memory game.
www.languagesonline.org.uk/
Click on francais for the whole list of things incl grammar
Or go straight to games - left hand side menu
then click on french
you will see a whole list of topics in french
Try an easy one first eg les animaux
At the top of the screen will appear the following options
the actual vocab list
jigsaw
pairs
speedword
wordweb
try jigsaw first - you drag the correct meanings with your mouse
Good luck - ask me on this thread if hard to navigate the site but is usually fine once you have had a play yourself!
also what is their textbook/scheme of work and is it setted or mixed ability?