Reproduction 7B Starter. What rules do you think we should have so that everybody can learn and feel comfortable in these lessons ?

Reproduction 7B

TRUE OR FALSE? Menstruation begins for both males and females

TRUE OR FALSE? Breasts grow larger for girls only

TRUE OR FALSE? Erections may occur more frequently.

TRUE OR FALSE? Body hair increases for males only.

TRUE OR FALSE? The reproductive organs begin to stop functioning.

TRUE OR FALSE? Changes in moods are less common.

TRUE OR FALSE? Males and females find themselves more interested in the opposite sex.

TRUE OR FALSE? Females are capable of producing breastmilk once puberty begins.

TRUE OR FALSE? Males may begin to have ejaculations during puberty.

http://www.youtube.com/watch?v=q-evqcXN8s8

Puberty I know what puberty is (c) I can name three things that happen to boys and girls at adolescence (b) I know what causes puberty (b) I can explain the changes that happen during the menstrual cycle (b) 5. Using hormones (A)

Watch the video and answer these questions 1) What is puberty 2) What causes all the changes at puberty ? Puberty is the time in humans when they grow and sexually mature. Hormones (chemical messengers) cause changes at puberty

When will it happen ? Usually between ages 8 and 13 in girls. and ages 9 and 15 in boys. But it is quite common for Puberty to start later.

Task 2- Draw a Venn Diagram with three things that happen to girls at puberty and three things that happen to boys at puberty and two things that happen to both at puberty. https://www.youtube.com/watch?v=PRpza35a6H4

Voice gets deeper Breasts grow Growth spurt Shoulders get broader Ovaries release eggs (period starts) Pubic hair grows Sperm is made Penis gets bigger Hips widen

Task 3-What happens during the menstrual cycle ? The menstrual cycle lasts about 28 days and is the lining of the uterus prepares for pregnancy. If you do not get pregnant the lining sheds (falls out/period/bleeding)

Use your completed diagram to answer these questions: How long is one menstrual cycle? On which day of the menstrual cycle does the period start? On which day of the menstrual cycle is an egg released from the ovary? What happens to the lining of the uterus if an egg is not fertilised? Does a woman have periods while she is pregnant? Explain your answer. How long does a period usually last in the 28 day cycle? If an egg was released from the left ovary on the 2nd March, when would the next egg be released from the right ovary? If a woman has a period which begins on the 1st January, when will her next period begin? Difficult question!! 9. An egg can survive for up to 3 days after it is released (up to day 17). Sperm can survive up to 8 days inside the woman. Susie want to have a baby. She has a cycle exactly like on the diagram. On which days is she most fertile (most likely to get pregnant)?

Answers Use your completed diagram to answer these questions: How long is one menstrual cycle? 28 days On which day of the menstrual cycle does the period start? Day 1 On which day of the menstrual cycle is an egg released from the ovary? Day 14 What happens to the lining of the uterus if an egg is not fertilised? It breaks down and leaves through the vagina as a period. Does a woman have periods while she is pregnant? Explain your answer. No, because the lining remains inside the uterus – it is where the embryo is attached. How long does a period usually last in the 28 day cycle? 5 days If an egg was released from the left ovary on the 2nd March, when would the next egg be released from the right ovary? 30th March If a woman has a period which begins on the 1st January, when will her next period begin? 29th January Difficult question!! An egg can survive for up to 3 days after it is released (up to day 17). Sperm can survive up to 8 days inside the woman. Susie want to have a baby. She has a cycle exactly like on the diagram. On which days is she most fertile (most likely to get pregnant)? Days 6-17

I know what puberty is (c) How did we get on “rate your mate” 5=excellent understanding, 1=no understanding. I know what puberty is (c) I can name three things that happen to boys and girls at adolescence (b) I know what causes puberty (b) I can explain the changes that happen during the menstrual cycle (b) 5. Using hormones (A)

Reproductive organs 02/02/2015 The menstrual cycle lasts about …………. days and is when the lining of the …………….. prepares for pregnancy. If you do not get pregnant the lining………………….this is called menstruation or a period. The egg is released on day ……………….of the menstrual cycle. Menstruation or a period lasts about ……………..days

What are these pictures of ? What does the video show ?

Reproductive Organs C- I can label the parts of the reproductive system on a diagram. B-I can describe the job of each part of the reproductive system. B-I can explain how an egg cell and sperm cell are adapted to their function A- I know when eggs stop being produced

https://www.youtube.com/watch?v=wcVC3TFI7fQ https://www.youtube.com/watch?v=NkLUA05ExHA

How are egg cells adapted for their function ? 16/04/2017 How are egg cells adapted for their function ?

How are sperm cell adapted for their function ? 16/04/2017

How did you get on ? Check and correct your answers. Rate your understanding. Write one thing you need to remember next time. Questions for the anonymous question box ?

Fertilisation and conception 03/02/2015 From memory label as many part as you can ! https://www.youtube.com/watch?v=GZk4hT7ncv0 http://subscription.echalk.co.uk/Science/biology/pregnancyStages/pregnancyStages.html

Fertilisation and conception Describe how fertilisation occurs Explain what fertilisation means Explain the difference between fertilisation and conception From memory label as many part as you can ! http://subscription.echalk.co.uk/Science/biology/pregnancyStages/pregnancyStages.html

16/04/2017

Is when an embryo implants in the uterus lining. Fertilisation Is when the sperm cell and egg cell join. Conception Is when an embryo implants in the uterus lining.

https://www.youtube.com/watch?v=wcVC3TFI7fQ https://www.youtube.com/watch?v=NkLUA05ExHA

O............when an egg is released. Complete the cartoon to show you know how fertilisation and conception occur O............when an egg is released. During S................I.................. The male e..................Millions of s...............into the female. F....................when the egg and sperm cell join. Help box of key words Fertilisation Sexual Intercourse Ovulation Conception Embryo When an embryo implants in the uterus it is called c............................ The fertilised cell divides. When there are 32 cells it is called an E.......................

Twins and baby development 16/04/2017 Starter When a man a woman prepare for sex what happens to the woman vagina? What happens to the mans penis? What is ejaculation? What is the difference between semen and sperm ? How many sperm are released in one ejaculation ? What happens when a sperm cell meets an egg cell ? What happen to all the other sperm cells ? How much of the genetic information does one sperm cell carry ?, how much does one egg cell carry ? What happens to the fertilised egg? What is implantation ?

Twins

Twins To know what a twin is (3) To know how different types of twins are formed (4-5) To practise key words

y http://www.pennmedicine.org/encyclopedia/em_DisplayAnimation.aspx?gcid=000033&ptid=17

Twins are formed when babies are born to the same mother at the same time What are twins? 2. cut and stick the correct explanation under the correct heading to show you know how different twins are formed (4). 3. In the second row draw labelled diagrams to show how different twins are formed (try to use key words fertilisation, sperm, egg) (5) 4. Extension work: Read page 35 and answer questions 3-4 (5-6) The fertilised egg divides into two and each of these two cells develops into a separate baby. Two eggs are fertilised by different sperm and each divides into a baby . The fertilised egg starts to divide but does not completely separate.

Think-pair-share 1. If identical twins were separated at birth would they still look the same ? 2. Are non- identical twins more or less similar than brothers or sisters ? 3. Should conjoined twins be separated ?

Sperm Environment. Parents . Genetic . Egg Twins Released Using these words explain how the three different twins are formed: Non-identical twins are formed by Identical twins are formed by Conjoined twins are formed by one egg, different eggs, same sperm, same egg, fertilising, different sperm, egg splits, egg doesn’t split completely Extension complete worksheet: Use these words to fill in the gaps. Identical twins came from the same fertilised ____., so they have inherited (get passed on) the same ________information from their_____. Any differences that exist between them will be due to their ________. Non identical _____or multiple births occur when two or more egg cells are ________and fertilised by different _______cells. Sperm Environment. Parents . Genetic . Egg Twins Released

Fertilisation and conception 28/01/2015 Race to make a baby LAT. H-W

The race to make a baby Starter 16/04/2017 Starter Put these words in order to show how fertilisation and conception occur.   A. Ejaculation B. Conception/implantation C. Fertilisation D. Sexual intercourse E. Cells divide and form embryo. D

3. Should conjoined twins be separated? Fill in the gaps. Identical twins came from the same fertilised ____., so they have inherited (get passed on) the same ________information from their____________. Any differences that exist between them will be due to their _______________. Non identical ___________or multiple births occur when two or more egg cells are ____________and fertilised by different ____________cells. If identical twins were separated at birth would they still look the same ?   2. Are non- identical twins more or less similar than brothers or sisters ? 3. Should conjoined twins be separated? 16/04/2017

Aims today 16/04/2017 1. Go through test 2. start level assessed task.

Level assessed task Y7 Level-Assessed Tasks  Badger Publishing Ltd