What is the target age for this series? IMO I thought some parts could be a little slower (like "think of something you do every day..." - pause just a second o

What is the target age for this series? IMO I thought some parts could be a little slower (like "think of something you do every day..." - pause just a second or two for thought). Not that it matters as the series is 3 years old and I'm no child psychologist