In this video Paul Andersen explains how energy flows in ecosystems. Energy enters via producers through photosynthesis or chemosynthesis. Producers and consumers release the energy from food through cellular respiration. An...

Paul Andersen explains the structure, function and importance of adenosine triphosphate (ATP). He begins by describing the specific structure of the molecule and its three main parts: adenine, ribose sugar, and phosphate groups. He...

This video describes the processes of photosynthesis and cellular respiration.

Respiration that uses oxygen. This is the main chemical reaction that occurs in all our cells to release energy that our bodies can use.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60...

The chemical reaction that takes place in all living cells to release energy from glucose.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise textual...

One of the most abundant elements, oxygen is vital to all life on Earth.



Chemistry - Periodic Table - Learni

ng Points.

Oxygen makes up 21% of

Earth's atmosphere.

Two-thirds of the

human body is...

A simple sugar that plays a very important role in all living things.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig...

Find out how remarkable adaptations allow the spinifex plant to thrive in the desert. Biology - Plants - Learning Points. Root hairs are specially adapted to suit their role. Root hairs increase the surface area of the roots for...

Everything we eat contains calories. We need them to function and carry out everyday tasks. How do we know which foods are right to eat and which contain 'empty calories'? Chemistry - Chemical Industries - Learning Points. Calories are...

Every living thing on our planet, from plants to animals, is made up of cells. Cells are the building blocks of life, but what are they and how do they work? Biology - Cells And DNA - Learning Points. All cells have vital genetic...

Through organic matter, rocks and the oceans, the element central to all life on Earth is constantly on the move. Earth Science - Earth's Resources - Learning Points. The carbon cycle is a transfer of carbon between living matter and the...

We put three different plants under different conditions to demonstrate that both light and carbon dioxide are needed for photosynthesis to occur. A leaf from each plant is taken and heated in ethanol to remove the pigment. These are...

We investigate the amount of energy stored in maize snacks and peanuts by burning them. The food is placed under an aluminium beaker of water before being set alight and the temperature change of the water is recorded. We can compare the...

We examine the number of microorganisms in different types of milk using resazurin indicator. Samples of pasteurised milk, UHT milk and powdered milk are left in the open for three days before resazurin indicator is added and the samples...

We use yeast to let us observe anaerobic respiration. The yeast is added to warm water and glucose. A layer of oil is placed over the solution so that no oxygen is available. The solution starts to bubble and the gas produced passes...

We use maggots to let us observe aerobic respiration. The maggots are placed over sodium hydroxide in a specimen tube. A bung and delivery tube are attached to the specimen tube that feed into a boiling tube of coloured water. In the...

We use a microscope to examine the blood flow in the open circulatory system of asellus aquaticus. We are able to see the haemolymph moving through its limbs in different directions. Biology - Human Body - Learning Points. Large...

What is it? These are the gills of a shark!
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Life processes - Body systems - The resp
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ratory system


A Twig Tidbit Film - Big Reveal. The image zooms out from an extreme close-up to full frame. The...

Find out why the sperm whale can dive deeper than any other mammal in order to hunt.
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Life processes - Body systems - The resp
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ratory system />

Learning Points
Sperm whales can hol
d

their...

Four sea creatures are shown, but which is the odd one out?
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Life processes - Body systems - The resp
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ratory system


A Twig Tidbit Film - Odd one out. The children have to work out which of four...

Did you know you are one big walking talking chemical reaction?
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Material processes - Changing materials - Chem
i

cal reactions />

Learning Points
Chemical react
i

ons happen inside the human...

Follow the journey of a human breath.
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Life processes - Body systems - The resp
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ratory system />

Learning Points
As we inhale, air trav
e

ls down the trachea to the lungs.
...

Discover the incredible ways in which animals and plants adapt to their environments.
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Life processes - Living things in their environment
s

- Adaptation />

Learning Points
Plants and...

Case study of the adaptations of this unique and fascinating monkey.
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Life processes - Living things in their environment
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- Adaptation />

Learning Points
Plants and animals adapt to the
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r...