Sat morning language exchange with children

I have a 2 year old boy and would be interested to expose him to French. I am an English teacher and could read to your child(ren) in English...The idea I had would to meet in the library and for the parents to read books to our children in English and French. My idea was to meet one week in the bibliotheque of the Institut Francais to read French storybooks and the next week read English books in the Bebeteca in the library in the Retiro for example...