Year 8 lesson on puberty. Original lesson from: http://www.tes.co.uk/teaching-resource/Body-changes-lesson-6093752/

1. Why does a pregnant woman have to be careful about what she takes into her body? 7B Pregnancy - Dangers to fetus A baby is entirely dependent on its mother during pregnancy. Oxygen and food pass across the placenta from the mother’s blood to the embryo’s blood. Some harmful substances can also pass across the placenta with serious effects on the developing baby.

4. Growing up All children eventually grow up to be ______ The time when the body is changing is called _______ Changes happen all over the ____ Emotional changes also happen at puberty. ________ cause these changes to happen ___________ is made by the testes in a boy In a girl the ovaries make a hormone called ________ adults Puberty / adolescence body Hormones Testosterone oestrogen

6. Body changes Body Change Boys Girls Voice breaks Pubic hair grows Hips widen Shoulders broaden Breasts develop Become more muscular Periods start Emotions change Penis grows Ovaries start to release eggs Testes start making sperm Get taller

7. When do changes happen?

8. 7B Puberty - Hormones 1. Most people reach puberty between the ages of… a) 10 and 18. b) 18 and 30. c) 30 and 60.

9. 3. Hormones are released inside the body and cause… a) physical changes only. b) emotional changes only. c) physical and emotional changes. 2. Changes during puberty are controlled by special chemicals called… a) hornets. b) hormones. c) horses. 7B Puberty - Hormones

10. 4. Emotional changes during puberty affect… a) feelings and behaviour. b) your hearing. c) the weather. 7B Puberty - Hormones 5. Physical changes during puberty affect the size and shape of… a) …the body. b) …CD players. c) …hornets.

11. 7. Understanding the science of your body as it changes is important to… a) your neighbours. b) your doctor. c) your health. 7B Puberty - Hormones 6. After puberty the individual has become… a) sexually mature and is able to produce offspring. b) a professional footballer and is able to go shopping. c) a blackbelt in judo and is able to go travelling.