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The Human Body

Bones, organs, senses and how bodies work — 25 skills across 9 years. Every skill below shows what it builds on and how to tell your child has it.

Science25 skillsages 5–14

Grouped by the age children typically start each skill. Ages are typical, not deadlines — follow your child’s pace.

Around age 5

Basic Body Needsages 5–7AC ✓ Bones & Musclesages 5–7 How Breathing Worksages 5–7 The Brain Controls the Bodyages 5–7 The Five Sensesages 5–7 The Heart & Bloodages 5–7

Around age 7

Balanced Diet & Food Groupsages 7–9AC ✓ Cells, Tissues & Organsages 7–9 How Muscles Move Bonesages 7–9 How the Eye Worksages 7–9 Naming Major Bonesages 7–9 The Digestive Journeyages 7–9 Types of Teethages 7–9

Around age 9

Circulation & Breathing Togetherages 9–11 Growing Up & Pubertyages 9–11 Healthy Lifestyle Choicesages 9–11 Heart & Blood Circulationages 9–11 How the Lungs Workages 9–11 The Immune Systemages 9–11 The Nervous Systemages 9–11

Around age 11

Immunity & Vaccinesages 11–13 Neurons & Brain Structureages 11–13

Around age 12

DNA & Genesages 12–14 How the Body Stays in Balanceages 12–14

Around age 13

Cancer & Stem Cellsages 13–14

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