Learning About Sex (8 books)
Concordia Publishing House

Bill Ameiss, Carol Greene, Lenore Buth, and Jane Graver

Books in this series: 

1. Why Boys and Girls are Different: For Girls Ages 3-5
2. Where Do Babies Come From?: For Girls Ages 6-8
3. How You Are Changing: For Girls 9-11
4. A) Sex & the New You: For Boys Ages 12-14
   B) Sex & the New You: For Girls Ages 12-14
5. A) Love, Sex & God: For Young Men Ages 14 and Up
   B) Love, Sex & God: For Young Women Ages 14 and Up
6. How to Talk Confidently with Your Child about Sex: For Parents