Natural Sciences and Technology Grade 6 Term 1

Natural Sciences and Technology Grade 6 Term 1: Life and Living Nutrients in food (PPT 3)

Topic 2 Nutrients in food Vitamins and Minerals Gr 6 Natural Sciences and Technology – Term 1, Topic 2

Vitamins and minerals are one of the four food groups - 1. 2. 3. 4. carbohydrates proteins fats and oils vitamins and minerals Gr 6 Natural Sciences and Technology – Term 1, Topic 2

Different types of vitamins • We are able to get our vitamins and minerals from: • the food we eat; • vitamin supplements; • the sun. Today we will be learning about Vitamins A, B, C and D. Gr 6 Natural Sciences and Technology – Term 1, Topic 2

Vitamin A Sources of Vitamin A: egg yolk, liver, green beans, peas, fish oil, carrots, pumpkin, butter. Functions of Vitamin A: It helps our eyes to produce a pigment that helps us to see in dim light. It helps your body to fight infection. Gr 6 Natural Sciences and Technology – Term 1, Topic 2

Gr 6 Natural Sciences and Technology – Term 1, Topic 2

Vitamin B Sources of Vitamin B: brown rice, whole-wheat bread, cereal, vegetables, meat. Functions of Vitamin B: there are seven types of Vitamin B and each type has a different function. For example: • it is used for breathing, • it helps to make energy, proteins and red blood cells. Gr 6 Natural Sciences and Technology – Term 1, Topic 2

Gr 6 Natural Sciences and Technology – Term 1, Topic 2

Vitamin C Sources: citrus food (oranges, naartjies), strawberries, tomatoes, peppers, guavas and green vegetables. Functions: It helps our bodies to fight infections because it strengthens our body’s immune system. Gr 6 Natural Sciences and Technology – Term 1, Topic 2

Gr 6 Natural Sciences and Technology – Term 1, Topic 2

Vitamin D Sources: the sun, egg yolk, fish liver oil, milk and margarine. Functions: • It helps our bodies to absorb calcium and phosphate. • Calcium and phosphate are used to make strong bones and teeth. • The ultra-violet rays of the sun changes cholesterol in our skin to Vitamin D. Gr 6 Natural Sciences and Technology – Term 1, Topic 2

Gr 6 Natural Sciences and Technology – Term 1, Topic 2

Minerals Four of the most important minerals are – § Sodium It helps to keep the correct balance of water in the body. It is found in most food, but not in fruit. § Calcium It helps strengthen our bones and teeth. It is found in fish, green vegetables, milk and cheese. Gr 6 Natural Sciences and Technology – Term 1, Topic 2

Minerals § § Zinc It helps to the body to grow. It is found in meat, fish and poultry (chicken and other birds). Iron It helps to make red blood cells that carry the oxygen through the body. It helps to give energy to the body. It is found in red meat, liver, beans & green leafy vegetables. Gr 6 Natural Sciences and Technology – Term 1, Topic 2