Science

MATTER

Making experiments with dissolutions











REPRODUCTION



THE FEMALE REPRODUCTIVE SYSTEM

The female reproductive system is formed by external sex organs and internal sex organs (located inside the pelvis).
The ovaries produce egg cells. There is one ovary on each side of the uterus.
The uterus is where a fertilised egg cell develops into a fetus.
The fallopian tubes connect the ovary with the uterus. The egg cell travels along them.
The cervix is the narrow part of the uterus that leads to the vagina.
The vagina is a muscular canal that leads from the vulva (the external organ) to the uterus.
Menstruation


HOW DOES THE MALE REPRODUCTIVE SYSTEM WORK?
1.- First, sperm cells are produced inside the testicles.
2.- Then the vas deferens transport sperm cells from the testicles to the seminal vesicles.
3.- Next, the sperm cells are transported through the prostate into the urethra.
4.- Finally the semen travels through the urethra and out of the penis. This process is called ejaculation.



Fertilization and Pregnancy

A man and a woman have sexual intercourse
The man deposits his semen in the woman's vagina. 
The sperm cells swim into the uterus and up the fallopian tubes, where one of them will fertilise the female egg cell. 
When a sperm cell joins with an egg cell in the fallopian tube, they form a new cell called a zygote (click here to watch a video about fertilisation).
 The zygote that results goes into the uterus. as it travels, it divides many times to form a group of cells called an embryo, and finally it develops into a fetus.



PREGNANCY
Pregnancy is the period of time between the fertilisation of an egg cell and the birth of a baby.
The placenta provides the fetus with oxygen and nutrients from the mother's blood. It also takes away carbon dioxide and waste that the fetus produces.
The fetus is connected to the placenta by the umbilical cord.
The amniotic sac contains a liquid called amniotic fluid. This liquid supports the fetus and protects it.




The birth


NUTRITION


Nutrition is the study of food and how it works in your body. Nutrition includes all the stuff that's in your food, such as vitamins, protein, fat, and more. It's important to eat a variety of foods, including fruits, vegetables, dairy products, and grains, so you have what you need to grow and be healthy. 

DIGESTIVE SYSTEM






NOW; CAN YOU ANSWER THE FOLLOWING QUESTIONS?


More information about the digestive system-Click please

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GAME

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sing along


RESPIRATORY SYSTEM


SONG




Respiratory process

























Click to review your learning
                                                    








Some videos about how our senses work













 The 6 graders are working in  the Nervous system so we post some pages and materials they could check to learn more things about this topic.

Some information

 

    
         How the Brain works



More information

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Very interesting web


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