My family has been a fan of the ValueTales books by Spencer Johnson. They are great for that transition period going from reading to your kid to your kid reading for themself. I read them as a kid, my sisters read them, my nieces and nephews read them, and we still have about half a set waiting for the next generation. My favorite was probably "The Value of Determination: The story of Helen Keller".

Amazon link: https://www.amazon.com/ValueTale-Multiple-Value-Tales-Book/d...