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Developmental Milestones and Related Information
Prenatal Development
The First Year
The Second Year
- Ages & Stages: 12-18 Months
- Ages & Stages: 18-24 Months
- Ages & Stages: The 2-Year-Old
- Adaptive Milestones, Ages 0-6
- Cognitive Milestones, Ages 0-6
- Developmental Milestones: 18 Months
- Developmental Milestones: 2 Years
- Developmental Milestones: The Second Year (AAP)
- General Developmental Sequence, Toddler - Preschool (Age 2-5)
- Language Development in Children, Birth-8 Years
- Motor Skills Milestones, Ages 0-6
- Normal Stages of Human Development, Birth-5 Years
- Social Skills Milestones, Ages 0-6
- Speech and Language Milestones, Ages 0-6
- Stages of Intellectual Development, 0-15 Years
- Stages of Social-Emotional Development, 0-18 Years
The Third Year
- Ages & Stages: The 3-Year-Old
- Adaptive Milestones, Ages 0-6
- Cognitive Milestones, Ages 0-6
- Development Through Your Child's Eyes: 18 to 36 Months
- Important Milestones: Your Child at Three Years
- General Developmental Sequence, Toddler - Preschool (Age 2-5)
- Language Development in Children, Birth-8 Years
- Motor Skills Milestones, Ages 0-6
- Normal Stages of Human Development, Birth-5 Years
- Social Skills Milestones, Ages 0-6
- Speech and Language Milestones, Ages 0-6
- Stages of Intellectual Development, 0-15 Years
- Stages of Social-Emotional Development, 0-18 Years
The Fourth Year
- Ages & Stages: 3 to 4 Year Olds
- Adaptive Milestones, Ages 0-6
- Cognitive Milestones, Ages 0-6
- Developmental Milestones: 4 to 5 year olds (AAP)
- General Developmental Sequence, Toddler - Preschool (Age 2-5)
- Language Development in Children, Birth-8 Years
- Motor Skills Milestones, Ages 0-6
- Normal Stages of Human Development, Birth-5 Years
- Social Skills Milestones, Ages 0-6
- Speech and Language Milestones, Ages 0-6
- Stages of Intellectual Development, 0-15 Years
- Stages of Social-Emotional Development, 0-18 Years
The Fifth Year
- Developmental Milestones: 4 to 5 year olds
- Adaptive Milestones, Ages 0-6
- Cognitive Milestones, Ages 0-6
- Important Milestones: Your Child at Five Years
- General Developmental Sequence, Toddler - Preschool (Age 2-5)
- Language Development in Children, Birth-8 Years
- Motor Skills Milestones, Ages 0-6
- Normal Stages of Human Development, Birth-5 Years
- Social Skills Milestones, Ages 0-6
- Speech and Language Milestones, Ages 0-6
- Stages of Intellectual Development, 0-15 Years
- Stages of Social-Emotional Development, 0-18 Years
The Sixth Year
The Seventh Year
The Eighth Year
The Ninth Year
The Tenth Year
The Eleventh Year
The Twelfth Year
Thirteen Years & Older
Additional Resources