Great introduction to all different kinds of families. I read this to my kindergarten students but would be appropriate for pre-k or first grade.
Mrs. Drakes room -All About Me Families
Families Are All Different Song (Tune: Ten Little Indians)
Preschool Sentence Strips with Family Illustrations via RainbowsWithinReach **label all: Our Classroom Family
Families Have/Can/Are Anchor Chart
Preschool Crafts for Kids*: My Family Shapes House Craft
Graph: How many people are in your family?
"What a Family!" by Rachel Isadora