1. La familia The Family
Grades K-2

2. La familia- the family

3. El papá- (the dad)
El padre- (the father)

4. La mamá-(the mom)
La madre-(the mother)

5. El hijo (the son)
El hermano (the brother)

6. La hija (the daughter)
La hermana (the sister)

7. La abuela- (the grandma)

8. El abuelo- (the grandpa)

9. El bebé- (the baby)

10. Los padres- (the parents)

11. Los abuelos- (the grandparents)
el abuelo
la abuela

12. Other family members El tío (the uncle) La tía (the aunt)
El primo (the boy cousin)
La prima (the girl cousin)
El sobrino (the nephew)
La sobrina (the niece)

13. Step families
Step families are a relatively new thing in Mexico, but there are words for members of step families. Here they are:
Hermanastro (stepbrother)
Hermanastra (stepsister)
Padrastro (stepfather)
Madrastra (stepmother)