Higher:
Is able to explain why air is drawn into the body and that it is an involuntary process
Middle:
Can describe the process of breathing and name the gas that we breathe in and the gas we breathe out
Lower:
Is able to identify where the lungs are in the body
Higher:
Is able to explain what the features of the model represent
Middle:
Can construct a model to show the process of breathing
Lower:
Describe what you see in the picture.
Encourage the children to use technical language i.e. lungs, rib cage, windpipe etc.
You could ask them to describe the different layers i.e. the lungs are covered by the rib cage.
Children could add labels on the board, by adding sticky notes etc.
Presentation - Starter Slide.
30 Second Discussion: Discuss with your talk partner how your life would be different if you only had one lung.
Answer questions and take part in activities during the presentation.
Stop the presentation at the relevant slides: Talk Partners; AfLs; Songs.
Take part in the Choral Response Questions activity (see Assessment section) after the Keywords/Rocket Words slide.
Presentation
Dr. Anna Hansell, an environmental epidemiologist at Imperial College London, describes how the blood takes in oxygen and releases carbon dioxide.
Ask pupils to practice making bullet point notes, Just themes of things that inspire them and things they need explaining. Run a plenary following the film to discuss their findings.
Presentation - Expert Film
Make a Model Lung
Once pupils have created their model lung, they should identify what parts of their model represent what parts of the lungs using the Handout.
The draw a labelled diagram of the lungs on the Handout including all the parts mentioned in the word bank.
Mission to Write -
Oxygen Journey
Today's writing task is to use the images on the handout and organise them in an order which captures the journey oxygen makes from the point air is inhaled. Children are to order these images appropriately and then write 1-2 sentences for each image to create a storyboard describing the journey.
Stretch children by asking them to extend the writing until the point carbon dioxide is exhaled from the body. Encourage children to use the rocket words from the lesson.
Make a Model Lung
Plastic bottles with bottoms cut off.
Straws.
Elastic bands.
Scissors.
Balloons (2 per bottle).
Modelling clay
Handout
Mission to Write -
Oxygen Journey.
Handout
Do your lungs have mucles in them?
Hiccups occur when your diaphragm get out of rhythm, why might hiccups affect your breathing?
Your lung capacity is the total volume of air you can draw into you lungs with a deep breath. Why might smokers have a reduced lung capacity?
Why do you breath faster when you do exercise?
Oxygen travell through your nose...
... down the trachea ...
... through the brochi ...
... into the bronchioles ...
... and into the alvioli.
The Science Behind the Science
Humans have two lungs situated in the chest on either side of the heart. The left lung is usually the smallest of the two because it has to share some of its space with the heart. When we breathe in, air reaches the lungs via the trachea (windpipe). Humans breathe around 25,000 times per day, although this can vary depending on what we are doing.
The lower section of the trachea branches out into smaller passages called bronchi. These eventually terminate in sacs called alveoli that exchange gases with the blood. In total, the human lungs contain over 300 million alveoli, which have a combined surface area of around 75 square meters. The diaphragm, found just below the lungs, is a muscle that aids breathing. It can contract to expand the lungs (letting in air) and then relax to compress the lungs (forcing air out).
When we breathe in, oxygen in the air is transferred from the alveoli to the bloodstream. The oxygen is then transported around the body by red blood cells. More specifically, the oxygen is carried by haemoglobin, a protein that contains iron and is responsible for making our blood a dark red colour. Oxygen is then used in our body to release energy from food. This process produces carbon dioxide which can be transported back to the lungs by the blood. Here, it is transferred into the alveoli and eventually expelled from the lungs via the trachea as we breathe out.
Strange Fact: the lung is the only organ that is capable of floating on water.
Identify and name the main parts of the human circulatory system and explain the functions of the heart, blood vessels and blood; to describe the ways in which nutrients and water are transported within animals, including humans.
Planet Earth - Biodiversity and inter-dependence - I can contribute to the design of an investigation to show the effects of different factors on the rate of aerobic respiration, and explain my findings. SCN 4-02b Biological systems - Body systems and cells - I have explored the structure and function of organs and organ systems and can relate this to the basic biological processes required to sustain life. SCN 3-12a
The study of the characteristics, systems, and behaviours of humans and other animals, and of plants; the interactions and relationships between and among them, and with the environment.
Reporting and presenting findings from enquiries, including conclusions, causal relationships and explanations of and degree of trust in results, in oral and written forms such as displays and other presentations.
Grade 7 Transportation in plants and animals
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