Science at key stage 3    (Year 7)

• that animals have different patterns of reproduction and development
• to make notes, summaries, etc to clarify ideas and thinking which can be used later

• that animals have different patterns of reproduction and development
• to draw conclusions from patterns in data
• that newborn human babies are more dependent than offspring of some other species

• the structure and function of the human male and female reproductive organs
• that fertilisation involves the fusion of the nuclei of sperm and egg
• that the fertilised egg divides into 2, 4, 8, etc cells as it passes down the oviduct

• that sperm and egg cells are specially adapted for their functions

• that male and female nuclei contain the characteristics of male and female parents respectively

• that egg cells are released from the ovaries at regular (approximately monthly) intervals
• that menstruation is a monthly cycle which stops during pregnancy
• that the stages in the menstrual cycle are controlled by hormones

• that the foetus develops within a membranous bag and is supported and cushioned by amniotic fluid
• that the placenta supplies nutrients and oxygen to the foetus via the umbilical cord, and removes carbon dioxide and other waste products

• that harmful substances and viruses can cross the placenta into the foetus and affect development

• that uterine muscle contracts during birth, expelling the foetus and placenta through the vagina
• that the baby is nourished by milk from mammary glands, which provides nutrients and protects from infection

• to summarise and make connections between key ideas in the unit
• to plan and develop ideas and lines of thinking into continuous text

• that periods of rapid growth occur during the human life cycle
• to decide what sort of graph is appropriate

• that cell division and increased cell size lead to growth of the body
• about the importance of sample size in obtaining reliable evidence
• to decide on an appropriate graph to display data
• to interpret class data and compare with national data

• that changes in hormone concentrations result in the development of secondary sexual characteristics and emotional changes at puberty
• to collaborate with others to share information and ideas, and solve problems
• to answer questions using relevant evidence or reasons

• to bring together information about a particular aspect of reproduction
• to distinguish between the main ideas in the unit