What is the title of the film/cartoon? Who are the main heroes of the story?
What is the main idea? What is it about? (use Present Simple here)
Which animals/fish/birds can be seen in the film/cartoon?
What do they do? How do they behave? Do they hunt? Or feed their children? Or probably fight with some other animals? Tell about it.
What is happening on the screen? (use Present Continuous here)
Do you like the film/cartoon? Why?
It seems to me that Matilda can be read and useful at any age. Although, probably, children will understand it even better than adults.