Growth & Development Guide

A new word, a daring climb, another curious question: growth takes many forms. Get to know your child's developing skills without making someone else's progress the benchmark.

Official Sources Reliable Content Up-to-date Info Practical Tips

A new word, a daring climb, another curious question: growth takes many forms. Get to know your child's developing skills without making someone else's progress the benchmark.

Official Sources Reliable Content Up-to-date Info Practical Tips

Growth & Development Guide(18 items)

See All

Filter this topic's content by age or search.

A child tells their father about the feelings of the school day with the help of a journal

Growth & Development

Emotional Development in 9–12 Year Olds

Children aged 9–12 often become more private, compare themselves with peers, and experience complex emotions. Learn how to support their emotional growth with calm boundaries, respectful listening, and problem-solving that honors their growing independence.

6 min read|9-12 Years

Read

A father helps his daughter express her feelings using emotion cards

Growth & Development

Emotional Development in 3- to 6-Year-Olds

Learn how to support your preschooler’s emotional growth through play, routines, and co-regulation. Discover practical strategies for big feelings, sibling conflicts, and preschool transitions.

6 min read|3-6 Years

Read

A father prepares a balanced snack while tracking his child's growth

Growth & Development

Height and Weight for Ages 9–12: WHO Reference Values

Learn how to support healthy growth and weight in 9–12-year-olds through balanced meals, routine movement, and positive body language—without comparison or restriction.

5 min read|9-12 Years

Read

A mother supports her daughter as she makes a personal board about her interests

Growth & Development

Identity Development at Ages 9–12

How to support your child’s evolving sense of self during ages 9–12 without labeling or interrogating them.

6 min read|9-12 Years

Read

A mother supports her teenage son as he works on thinking and planning

Growth & Development

Cognitive Development in Teens (12–18 Years)

Understand how teens’ thinking evolves unevenly and how to support their planning, reasoning, and decision-making without overstepping their growing autonomy.

5 min read|12-18 Years

Read

A parent observes their two-year-old during play and takes notes

Growth & Development

Development Checks from Birth to Age 6

From babyhood to preschool (ages 0–6), learn the difference between everyday monitoring, screening and assessment, and record useful observations without turning childhood into a test.

7 min read|1-3 Years

Read

Tools for this topic

See All

Calculators, schedules and checklists — sign in and the results are saved to your child's profile.

Baby percentile calculatorWhere does your child's weight and height sit among children the same age? See it in seconds on the WHO growth curves.Baby milestones by monthCheck off what most children your child's age can do, and talk about the rest with your doctor.Child Height Predictor & Genetic Target Height CalculatorHow tall will your child be as an adult? Enter both parents' heights to calculate the pediatric mid-parental target height and expected adult height range using the Tanner and AAP formulas.

Growth & Development

Sub Topics

Height, weight & growth · Motor skills · Language & speech · Thinking, learning & play · Social & emotional development · Milestones & developmental checks

7Sub Topics

18Content

Featured

Baby and Toddler Growth 0–3: WHO Height and Weight by Month

Track your baby's and toddler's height and weight from birth to 3: WHO values by month for the first year, how to read the growth chart at 1–3, normal ups and downs, and when to seek help.

Read

Growth & Development Guide

Growth & Development Guide(18 items)

Emotional Development in 9–12 Year Olds

Emotional Development in 3- to 6-Year-Olds

Height and Weight for Ages 9–12: WHO Reference Values

Identity Development at Ages 9–12

Cognitive Development in Teens (12–18 Years)

Development Checks from Birth to Age 6

Tools for this topic

Growth & Development

Height, weight & growth

Motor skills

Language & speech

Thinking, learning & play

Social & emotional development

Milestones & developmental checks

Puberty & body changes

Development from 1 to 3 Years

Baby and Toddler Growth 0–3: WHO Height and Weight by Month