It can be difficult talking about puberty, not to mention the birds and the bees. Thankfully, there are some great books out there that make it easier.
For 7-10 year olds, we recommend It's So Amazing!: A Book about Eggs, Sperm, Birth, Babies, and Families by Robie H. Harris
For 10-14 year olds, we recommend It's Perfectly Normal: Changing Bodies, Growing Up, Sex, Gender, and Sexual Health by Robie H. Harris
A book for boys we recommend is The Boys Body Book (Fifth Edition): Everything You Need to Know for Growing Up!
American Girl has two books for girls: The Care and Keeping of You: The Body Book for Younger Girls, Revised Edition
There is also Guy Stuff: The Body Book for Boys
We hope that these books can help make it easier for you to talk to your kids about puberty. If you have any questions, please feel free to bring it up at your next appointment!