Each activity will help children practise at least one of the skills we test in our Cambridge English: Young Learners tests – reading and writing, listening or speaking. They also include words taken from the word lists used to create these exams.

http://www.cambridgeenglish.org/learning-english/parents-and-children/activities-for-children/pre-a1-level/sing-and-learn-at-the-zoo/