Cells, Tissues & Organs
Understand that the body is organised in a hierarchy: tiny cells are the building blocks, groups of similar cells form tissues, tissues combine into organs (like the heart or stomach), and organs work together in organ systems (like the circulatory system)
Typical age: 7–9 years
“Can your child explain that the body is made of tiny cells, and that cells group together to make tissues, which make organs, which make whole systems?”
0 / 3 mastered
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Needs first
- The Heart & Blood
Cells-to-systems hierarchy helps organise knowledge of heart as an organ in a system
- The Brain Controls the Body
Cells-to-systems hierarchy helps organise knowledge of brain as an organ in a system
- How Breathing Works
Cells-to-systems hierarchy helps organise knowledge of lungs as organs in a system
Unlocks next
- The Immune SystemREQUIRED
Understanding immune system requires knowing about cells and how they form systems
- Structures for Survival
Understanding the cells → tissues → organs → systems hierarchy enriches the ability to argue about internal structures supporting survival
- Heart & Blood CirculationREQUIRED
Understanding 4-chamber heart requires knowing organs work within organ systems
- How the Lungs WorkREQUIRED
Understanding alveoli and gas exchange requires knowing the cells-to-systems hierarchy