I have moved your thread to "Teaching English" which is more appropriate for asking other teachers for advice. I have never taught children so I will leave your query to someone with experience.
The only thing I will say is that starting any topic with the attitude that it's "dull and boring" won't help your teaching at all. Teaching a foreign language to a learner should always be exciting, both for you and the student.
One query - your member profile shows "Student or Learner", not "Teacher". Are you still training to be a teacher?