They can learn about farm animals, can/can't, how to answer. Action verbs, and how to relate them with other words. How to describe, using has got/hasn't got, and learn the names of the farm animals, using can and can't.
The present downloadable printable is intended for at Beginner (pre-A1) level. It is a useful material for revising CAN in English. It features the vocabulary topic of Actions and Animals.