---
title: "Human Life Stages"
description: "Describe the changes as humans develop to old age, including the stages of the human life cycle"
canonical: https://lightmysky.com/learn/science/human-life-stages-mt_OSfCeIeBak
source: https://lightmysky.com/learn/science/human-life-stages-mt_OSfCeIeBak.md
retrieved: 2026-10-19
---

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# Human Life Stages

Describe the changes as humans develop to old age, including the stages of the human life cycle

Subject: Science · Area: Organisms & Life Processes · Ages 9 to 10
Page: https://lightmysky.com/learn/science/human-life-stages-mt_OSfCeIeBak

## Ready when they can

- Name the main stages of human development: baby, toddler, child, teenager, adult, elderly
- Describe key changes at puberty (growth spurt, body changes)
- Explain that old age brings changes like reduced strength, greying hair, and slower healing

## Lesson: The stages of a human life

Every person moves through stages as they grow older, from a tiny baby all the way to an elderly adult. At each stage, the body changes in size, strength, and ability.

*(drawing: This is the order everyone moves through: baby, toddler, child, teenager, adult, then elderly.)*

One of the biggest changes happens during puberty, when a child becomes a teenager. The body has a growth spurt and grows taller fast, and other body changes begin too.

**Example.** Jordan is twelve. This year he grew two inches and needed new shoes twice. His voice also got a little deeper. These are signs that Jordan has started puberty.

**Tip.** In old age, the body slows down. Muscles are not as strong as before, hair often turns grey, and cuts take longer to heal. These changes are a normal part of growing older.

**Recap.** Every human passes through the same stages, baby to toddler to child to teenager to adult to elderly, with big changes at puberty and in old age.

## Practice

8 questions on this page, each with its working shown.

## Needs first

- [Life Cycles of Organisms](https://lightmysky.com/learn/science/life-cycles-of-organisms-mt_4IVWRAZoNC)
- [Organ Systems Vocabulary](https://lightmysky.com/learn/science/organ-systems-vocabulary-mt_K8DJzqbksM)

## Opens up

- [Growing Up & Puberty](https://lightmysky.com/learn/science/growing-up-and-puberty-mt_pu2mmK27UA)