How does sexual intercourse lead to growing a fetus? 06 April 2019 How does sexual intercourse lead to growing a fetus? Key terms: sexual intercourse, implantation and pregnancy All: I can describe how a woman becomes pregnant after fertilisation and correctly use the term implantation. Most: I can recall the names and functions of the structures surrounding the development of the foetus. Some: I can describe how identical and non-identical twins occur and describe how materials are supplied and removed from the foetus. Nucleus , fertilisation, egg, sperm Starter: Unscramble these words… sun clue, it retains foil, geg, perms

Can you use those words to make a sentence? Best sentence gets a reward point

Key definitions: Sexual intercourse: or ‘making love’, ‘having sex, during which the semen is ejaculated into the end of the vagina. Implantation: when an embryo sinks into the lining of the uterus. Pregnant: when a female animal has an embryo growing inside her uterus.

TASK: Fertilisation question grid M – question grid I – individually N – quietly T – 10 mins Read the questions then watch the video – do not write anything down. Re-watch the video and answer the questions. https://www.youtube.com/watch?v=_5OvgQW6FG4

Boardworks KS3 Science 2008 Human Reproduction

Boardworks KS3 Science 2008 Human Reproduction

TASK: Story of a sperm and egg cell M – question grid I – individually N – quietly T – 10 mins Using your question grid Bronze Silver Gold Write 3 sentences describing the journey of a sperm or egg cell. Create a flow chart to show the journey of a sperm or egg cell. Write a paragraph explaining the journey of the sperm or egg cell.

TASK: Pregnancy Read p.30-31. Complete the worksheet to summarise the information read. M – work sheet I – individually N – quietly T – 10 mins

How are twins formed? Non-identical twins; woman’s ovaries release two eggs, each of which is fertilised. Identical twins; one fertilised egg cell that splits into two new separate cells.

What is IVF?

All: Most: Some: Confidence Check Not confident In between Super confident All: I can describe how a woman becomes pregnant after fertilisation and correctly use the term implantation. Most: I can recall the names and functions of the structures surrounding the development of the foetus. Assess pupils by asking them to express their confidence in their achievement from 1-5 for the lesson aims. Some: I can describe how identical and non-identical twins occur and describe how materials are supplied and removed from the foetus.

Plenary: How do conjoined twins occur?