My primary work might be at my job, earning money to support the home, and in time my wife's might be to raise and educate our children. However, she also wants to have projects and roles outside the home, and I'll certainly have important roles within the home.

As an example, we plan to homeschool. My wife might volunteer at a homeschool co-op to help fill the needs of the community. She might also work a part-time job if schedules and the needs of children allow to earn some extra money for savings.

On the other hand, I might be a math tutor for our kids, since that's a strong suit for me.

There are good reasons men typically work more outside the home and women within, but there's often a lot of overlap, because both spouses serve the greater good of the family.