Digestion, Teeth & Excretion — 4th Grade (ages 9-10)

Digestive Organs – Know Your System

The Digestive System – Meet the Main Organs

Digestive System Journey – From Mouth to Exit

The Eggshell Experiment – Testing How Drinks Affect Teeth

Science of the Experiment – Planning and Drawing Conclusions

Drink Choices and Teeth – What the Experiment Tells Us

Why We Chew – Mechanical vs Chemical Digestion

Teeth and Mechanical Digestion – Chew It Right

Nutrients and Waste – What the Body Keeps and Removes

Solid Waste Removal – How the Body Gets Rid of What It Doesn't Need

Tooth Decay – How Cavities Form and How to Prevent Them

Healthy Teeth Habits – Brush, Limit Sugar, Visit the Dentist

Daily Dental Care – Building a Healthy Teeth Routine

Types of Teeth – Incisors, Canines, and Molars

Tooth Anatomy – What Teeth Are Made Of

Water and Fibre – The Unsung Heroes of Digestion

Constipation – What Happens When Digestion Slows Down

What Each Organ Does – Digestive Functions Explained

Digestive Functions Deep Dive – How Organs Work Together