Curated Video
What Are Asteroids?
How are asteroids in our Solar System formed, where are they found, and what danger do they pose to life on Earth? Physics - Our Solar System - Learning Points. Asteroids are made from rock, metal or carbon, while comets are made of rock...
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Life in Hot Deserts
From camels to lizards, how animals and plants survive in some of the hottest and driest habitats on Earth - the hot deserts. Biology - Adaptation And Evolution - Learning Points. Organisms survive harsh environments by physical and...
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How Did Saturn Get Its Rings?
Since Galileo first sighted Saturn, scientists have been baffled by its beautiful rings. What are they made of and where did they come from? Physics - Our Solar System - Learning Points. Saturn's rings were first discovered by Galileo in...
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Moore's Law
Computing technology has developed at a phenomenal rate in recent decades – what would once fill an entire room can now be held in the palm of your hand. So how was Moore's Law able to predict this over 50 years ago? Physics -...
Curated Video
Earth's Twin
Billions of years ago, Earth collided with its twin planet Theia. The impact and resulting geophysical changes prepared Earth for complex life. Physics - Our Solar System - Learning Points. 4 billion years ago Earth had a twin called...
Curated Video
Elements vs Alloys
We compare melting points of lead and tin to the melting point of their alloy, solder. By timing how long it takes samples of each to melt, we discover that the melting point of solder is actually lower than those of both lead and tin....
Curated Video
Dissection: Lungs
We dissect and examine a cow\u2019s lungs. Before the dissection, the lungs are inflated to show the changes in volume that occur when mammals breathe. During the dissection the position and function of different parts are examined,...
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Frozen Balloon
We lower a helium-filled balloon into liquid nitrogen to see how the change in temperature affects its volume. When it hits the cool liquid nitrogen, the gas inside contracts and the volume of the balloon decreases. When it is removed...
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What is an Atom?
From our bodies to the oceans and stars, everything is made of millions upon millions of tiny atoms. But what are atoms made of? Chemistry - Atoms And Bonding - Learning Points. The building blocks of all elements are called atoms. Atoms...
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Ways of Looking at the World
From two dimensional maps, to satellite images from space: discover some of the many ways to explore the Earth and its physical and 'human' features. Human Geography - Orientation And Settlements - Learning Points. Maps have been used by...
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Medical Marvels: Ultrasound
Born out of research into RADAR in World War Two, ultrasound has become one of the most important medical inventions. What is it, and how does it work? Biology - Being Human - Learning Points. Ultrasound was developed by Ian Donald in...
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An Ancient Olympian
What the discovery of a skeleton over 2,000 years old tells us about the training techniques of ancient olympians. Biology - Human Body - Learning Points. In 1959 the tomb of an ancient Olympian was discovered in Taranto, southern Italy....
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Growing Pains
Learn how bones change shape to form the adult skeleton, the problems this causes for growing teenagers, and how to ensure healthy bones for life. Biology - Being Human - Learning Points. Hormones released during puberty cause a rapid...
Curated Video
Counting Crowds
When measuring very large data sets, like the crowd of 1.8 million who attended Obama's inauguration, often exact counting is impossible. Find out how statisticians use density samples to estimate their statistics. Maths - Accuracy And...
Curated Video
Asteroid - Rocky Objects in Space
Objects composed of rocky or metallic materials, mainly found orbiting the Sun in a region called the asteroid belt between Mars and Jupiter. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning...
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Ecosystem
A living community of organisms along with their physical environment, functioning as a unit. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig...
Great Big Story
Unveiling the mysteries of manta rays with Andrea Marshall
Dive into the world of manta rays with marine biologist Andrea Marshall, exploring their intelligence, threats, and conservation efforts.
Curated Video
Dung beetle
Did you know that the dung beetle is stronger than an elephant? The world around us - Investigating forces - Speed and strength Learning Points The stronger something is, the bigger the force it can use to push or pull things. A Twig...
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The Moon - Moon’s Scale
Discover the size and scale of the Moon. Our universe - Space adventure - The Sun and Moon Learning Points The Moon is much smaller the Sun. Astronauts have travelled to the Moon in spacecraft. The first astronaut landed on the moon in...
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Separation by sieving – What happens next?
Brussels sprouts are harvested and placed on a large mechanical sieve ... what happens next? Material processes - Separating mixtures - Separation by sieving A Twig Tidbit Film - What happens next? A short section of film is played and...
Curated Video
Snowflakes
How are snowflakes formed in such a dizzying array of patterns? Material processes - Solids, liquids and gases - Characteristics of water Learning Points Liquid water freezes at 0°C. The shape of a snowflake is changed at different...
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The Sun and shadows
Investigate why shadows change size during the day. Physical processes - Light - The Sun as a light source Learning Points Shadows change size during the day because of the position of the Sun. When the Sun is overhead shadows are short....
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Rocky Planets - Solar System Exploration
Adventure around our solar system and explore the four rocky planets. Physical processes -The Earth and beyond - The Solar System Learning Points The Solar System is made up of eight planets that orbit the Sun. The four planets closest...
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Combine harvesters
Find out how a combine harvester separates grains from chaff using sieves. Material processes - Separating mixtures - Separation by sieving Learning Points The size of the mesh in a sieve ensures that solids are separated correctly. A...