While in Paris with your kids here what I suggest for a lot of fun!!

the Aquarium 20 000 leagues under the Trocadero
Millions of litres of water and thousands of fish under the Trocadero Gardens… this is Aquarium de Paris.
To give the children a better view of the fish, they are all welcome to roll up their sleeves and touch the fish in the ‘petting basin’, designed especially for them: the kids love it!

and just a few miles away  ….  Astérix Park 
Come and spend a day in this family entertainment park, where children and adults will enjoy themselves on the tracks of Astérix®, the hero of the most famous French comic strip. Attractions, merry-go rounds and shows are combined for a day of unforgettable fun. Your children will be thrilled to meet their favourite characters!