Encourage chastity and obedience in your students as they learn the biological and theological reasons for being open to new life in married love.
Natural family planning (NFP) is a way to use the fertile signs of a woman's body to postpone or to promote pregnancy, and is a moral way to space the birth of children if serious reason exists during married life. This lesson is a brief overview of NFP for the high school Biology student, and also looks at the biological as well as theological objections to the use of artificial contraception. During this lesson you will NOT be teaching the mechanics of NFP, as that is not appropriate for high school students, but you will be introducing in very general terms the basic idea of fertility. This lesson is meant to be a supplement with a biological emphasis to the religion classes that address vocation and married life at the high school level. It is also assumed that the students have an understanding of the biology of human reproduction going into the lesson.
The lesson includes a Powerpoint file, lecture notes, a tract from Catholic Answers about birth control and a crossword puzzle activity that goes with the tract. Links to primary sources about the Church's teaching on chastity during married life, natural family planning, and contraception are also included.