Transpiration in plants

Watch the video!


Publicado en S4- Biology Virtual period 2019 | Deja un comentario

Virtual period: comparing mitosis and meiosis

Watch the video «Comparing mitosis and meiosis»

a- What is the purpose of meiosis?

b- Where does it take place?

c- Make a drawing showing the parent and daughter cells in mitosis and meiosis.

d- Build a table to show the differences between mitosis and meiosis. You should include: number of chromososmes in parent cells (in human cells) – number of chromosomes in daughter cells – number of daughter cells produced – Is there any variation? – daughter cells genetically identical or different from parent cells

e- Do red blood cells divide by mitosis? Explain your answer.

Enjoy! 🙂

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Virtual period PAIR WORK: chromosomes and mitosis



PAIR WORK: same groups from the activity about STI.


In this period we are going to learn about the continuity of life. You may have heard words like DNA, genes, inheritance, chromosomes, cell division…. let´s investigate what all these is about!

Watch the video !



1- a- Make a drawing of a body cell which contains one chromosome.

b- Make a drawing of a body cell which contains one chromosome before cell division.

Explain the difference between them.

2- Explain the difference in the number of chromosomes between a body cell and a gamete.


Watch THIS video about mitosis.

1- Make a drawing of a cell with 2 chromosomes.

2- Make a drawing of the same cell before cell division.

3. Make a drawing of the daughter cells.

4- Name examples in which mitosis takes place in the human body.

DEADLINE: Monday July 1st

Hands on!



Publicado en S4- Biology Virtual period 2019, Uncategorized | Deja un comentario

Pathogens and immunity

Group work

TASK 1: Answer the following questions in a doc

1- Define the term «Pathogen»

2- How pathogens enter in our body?

3- Describe each of the human body defences.


Each group will investigate a disease following the instructions given in the Task 1. You will create a presentation to share within the class.

1)Lucy- Violeta: Salmonellosis

2) Bauti B- Lucas- Bauti G: Cholera

3) Rena- Oli- Lu: Sickle cell anaemia

4) Achu- Valen: Dengue

5) Gonzalo H- Manolo- Juna P: Pneumonia

6) Fermín- Toto- Titín: Aids

7) Gonzalo F- Marina C- Nina F- Mora P: Flu




Publicado en Senior 3- Biology 2019 | Deja un comentario

S3 1st term test

These are the topics:


  • Breathing and gas exchange, composition of inspired and expired air.
  • Structures of the respiratory system
  • Diseases: emphysema, lung cancer, COPD, effects of tobacco smoke (tar, carbon monoxide, nicotine and smoke particles)
  • The heart
  • General circulation
  • Blood vessels
  • Effects of exercise on the heart and breathing rate
  • Blood
Publicado en Senior 3- Biology 2019 | Deja un comentario

S4 1st Term test

These are the topics:

  • The eye as a sense organ
  • Endocrine system: glands and hormones (virtual period)
  • Secretion of adrenaline
  • Homeostasis: Control of glucose in blood (insulin and glucagon)
  • Male reproductive system
  • Female reproductive system: anatomy
  • Drugs: heroin, tobacco smoke, alcohol, antibiotics.

Lab work: – food tests

– Enzymes

– Effect of ph and temperature on the activity of enzymes,

– Body size and cool rate


Publicado en Senior 4-Biology 2019 | Deja un comentario

The heart and circulation

TASK 1 : pulmonary and systemic circulation

Play THIS animation and use two different colours to identify both circulations in the worksheet.

TASK 2: blood vessels

a-Read the information from THIS PAGE and answer all the interactive questions.

b- Make a labelled drawing of a cut section of an artey, a vein and a capillary.

c- Explain how the structure of arteries, veins and capillaries is related to their functions.

Publicado en Senior 3- Biology 2019 | Deja un comentario

No more plastic global project

Hi everyone!


Last class you were introduced to the project by looking at the image and exploring it by using a «Thinking routine»: see, think, wonder.


Wonderful thoughts and questions arose from them.


Which places are the most polluted?

Why do people throw so much trash?

How can humanity stop pollution and destruction of nature?

Is someone helping to remove all the trash from the oceans?

How much are organisms affected?

What can we do to stop people destroying the world?

Why do we use a lot of plastic?

I would like all the countries to join and work together to reduce the use of plastic and stop the ocean pollution.

Why is there a lot of trash in water?

In WEEK 1 you will investigate :

What’s the problem? Plastic soup, microplastics, single use plastic… Your aim is to define the problem, both locally and globally.

Group work:

1- What´s the problem? Plastic soup (globally)

2- What´s the problem? Microplastics (globally

3- What´s the problem? Single use plastics  (globally)

4- Define and describe the situation in Argentina.  (globally)

Publicado en DHsecundaria, S4- Biology Virtual period 2019 | Deja un comentario

Building global citizens: the SDG (Sustainable Development Goals)

Hello everyone!

During 4 weeks we will be part of a global project which involves more than 220 schools  across 50 countries, covering six continents.

We will focus on a problem, solutions and how to take action. You will be able to explore, brainstorm, discuss, create, connect, reflect and share your findings via weekly videos and pictures which will be shared at the website. Once a week you will watch the videos from your global peers to gain a deeper understanding about them.

But….. What do you understand by «Building global citizens»?

              Why is it important to think globally?

              Do you know what the SDG (Sustainable Development Goals are?

Let´s learn about them…

Read about the UN Sustainable Development Goals

  • Briefly explain the aim of the SDG
  • Take a look at the 17 goals.
  • Describe 3 goals that called your attention and give reasons for your choice.

Once you completed all the activities, share them in a doc. with the title «VP: The SDG»

DEADLINE: Tuesday April 16th




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Problems in the respiratory system

Group work:


2) Emphysema

3) Lung cancer

4) Tobacco smoke


Oral presentations

Monday April 15 th

Wednesday April 17th

Rubric for assessment



Publicado en Senior 3- Biology 2019 | Deja un comentario