KO: Health and Nutrition
Subject: Science | Year: 6
Name: _________________________ Class/Set: ____________ Date: ____________
1. Key Knowledge / Core Facts
- Balanced Diet: Consuming a variety of food groups in the correct proportions to maintain health.
- Energy Balance: The relationship between energy taken in (food) and energy used (physical activity).
- Water: Essential for all bodily functions; humans should drink roughly 6-8 glasses per day.
- The Heart: A powerful muscle that pumps blood around the body to deliver oxygen and nutrients.
- Circulation: The process of blood moving through the heart, lungs, and body via blood vessels.
- Lungs: The primary organs for gas exchange, taking in oxygen and removing carbon dioxide.
2. Key Vocabulary
- Nutrient: A substance found in food that provides nourishment essential for growth and life.
- Deficiency: A lack of a particular nutrient which can lead to health problems or illness.
- Artery: A thick-walled blood vessel that carries oxygenated blood away from the heart.
- Vein: A blood vessel that carries deoxygenated blood back towards the heart.
- Capillary: A tiny blood vessel where the exchange of gases and nutrients takes place.
- Pulse: The rhythmic throbbing of arteries as blood is pumped through them, measured in beats per minute (BPM).
3. The Seven Food Groups
- Carbohydrates: Provide the body's main source of energy (e.g., pasta, potatoes, bread).
- Proteins: Essential for growth and the repair of body tissues (e.g., meat, fish, beans, eggs).
- Fats: Provide a store of energy and insulation for the body (e.g., butter, oils, nuts).
- Vitamins: Required in small amounts to keep cells and organs healthy (e.g., Vitamin C in oranges).
- Minerals: Necessary for specific tasks like building strong bones (e.g., Calcium in milk).
- Fibre: Helps the digestive system process food and prevents constipation (e.g., wholemeal cereals).
- Water: Transports nutrients, regulates temperature, and makes up a large part of the blood.
4. Lifestyle Impacts
- Exercise: Increases heart rate, strengthens muscles, and improves mental well-being.
- Smoking: Damages the air sacs in the lungs and increases the risk of heart disease and cancer.
- Alcohol: A drug that slows down the nervous system and can cause long-term damage to the liver.
- Drugs: Substances that change the way the body or mind works; can be medicinal or harmful.
- Obesity: A condition of being very overweight, which puts significant strain on the heart and joints.
- Hygiene: Regular washing and tooth brushing to prevent the spread of harmful microbes.
5. The Circulatory System
- Double Pump: The heart pumps blood to the lungs (to get oxygen) and the body (to deliver oxygen).
- Blood Components: Made of red blood cells, white blood cells, platelets, and plasma.
- Oxygenated Blood: Blood rich in oxygen, typically bright red, found in most arteries.
- Deoxygenated Blood: Blood that has given up its oxygen to cells, found in most veins.
- Heart Rate: The speed at which the heart beats; this increases during exercise to deliver more oxygen.
6. Common Misconceptions
- Blue Blood: Deoxygenated blood is dark red, never blue; it only looks blue through the skin.
- Fat is 'Bad': The body requires certain healthy fats for brain function and protecting organs.
- Sugar: While a carbohydrate, 'simple' sugars give a quick burst of energy followed by a 'crash'.
- Heart Location: The heart is in the centre of the chest, protected by the ribs, tilted slightly to the left.
- Fitness vs Health: You can be 'thin' but 'unhealthy' if you do not eat a balanced range of nutrients.
⚠ TEACHER’S GUIDANCE
🍎 Pedagogical Overview
This Knowledge Organiser (KO) is designed for Year 6 students to support the 'Animals including humans' unit of the National Curriculum. It focuses on the impact of diet, exercise, and lifestyle on body function.
💡 Teaching Strategies
- Retrieval Practice: Use the 'Key Vocabulary' section for weekly 'low-stakes' spelling and definition quizzes.
- The 'Cover and Check' Method: Encourage students to cover a category and see how many facts they can recall from memory.
- Dual Coding: Ask students to draw a simple diagram of the heart/circulatory system next to the facts in Section 5 to aid retention.
🔍 Common Misconceptions to Address
- The 'Blue Blood' Myth: Explicitly teach that blood is always red. The blue appearance of veins is due to how light reflects through the skin and fat layers.
- Nutrient Confusion: Ensure students understand that 'fats' are a necessary food group, but the source and quantity are what determine health outcomes.
🛡 Safety & Nuance Check
- Sensitivity: Be mindful when discussing obesity, diet, and lifestyle choices, as these can be sensitive topics for children with varying home backgrounds or health conditions.
- Drugs and Alcohol: Ensure the distinction between medicinal drugs (e.g., antibiotics) and harmful substances is clear, focusing on the scientific impact on the body's systems.
