Grade 6 Science: Human Body Systems and Health
Free Grade 6 Science unit on Human Body Systems and Health: 10 lessons in order. Includes practice questions and answer keys.
10 lessons in this unit
Human body systems
Get an overview of the main human body systems, digestive, respiratory, circulatory, nervous, skeletal, muscular and others, their main jobs and how they work together to keep us alive and healthy.
Lesson 2The digestive system
Learn the path of food through the digestive system, mouth, oesophagus, stomach, small intestine and large intestine, the jobs of each part, the difference between mechanical and chemical digestion and the importance of fibre and water.
Lesson 3The respiratory system
Learn the path of air through the nose, trachea, bronchi and lungs, how gas exchange happens in the alveoli, how breathing works using the diaphragm and ribs, and how to look after our lungs.
Lesson 4The circulatory system
Learn how the heart pumps blood through arteries, veins and capillaries, the parts of blood, red cells, white cells, platelets and plasma, and how circulation carries oxygen and nutrients to cells and removes waste.
Lesson 5The nervous system
Learn the parts of the nervous system, brain, spinal cord and nerves, how signals travel as electrical impulses, how senses and reflexes work, and how to protect the brain.
Lesson 6Skeletal and muscular systems
Learn the jobs of the skeleton, support, protection, movement and making blood cells, the types of joint, how muscles work in antagonistic pairs and how to keep bones and muscles healthy.
Lesson 7Reproductive system introduction
An age-appropriate, factual introduction: living things reproduce, humans have male and female reproductive systems, new life begins when a sperm cell joins an egg cell, and a baby develops over about nine months. Taught accurately and respectfully, following school and family policies.
Lesson 8Puberty and physical development
Learn that puberty is a normal stage between childhood and adulthood when hormones cause physical, emotional and social changes, that everyone develops at their own pace, and how to look after hygiene, sleep, food and feelings. Taught respectfully following school policy.
Lesson 9Personal health
Learn the parts of a healthy lifestyle: balanced diet, physical activity, sleep, hygiene, mental wellbeing and avoiding harmful substances, and make a personal health plan.
Lesson 10Disease prevention
Learn how infectious diseases spread, by air, touch, water, food and animals, how the body defends itself, how vaccination, handwashing, clean water and safe food prevent illness, and why we stay home when sick.