Books for 12 year olds are designed for the preteen your child has become. With subject matter more relevant to a preteen's life, books for 12 year olds see plots getting more complex. It's a time of coming of age and beginning to learn about getting closer to adulthood.
Whether you look at the bestsellers, for something a little older and classic, or go for a completely different like graphic novels, books for 12 year olds can help with learning development and social and emotional understanding. Keep your child's imagination open, but prepare them for the approaching teenage years.