Curated Video
Normal
In physics, the normal is a line perpendicular to a surface. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce...
Curated Video
Angle of incidence
When a ray or beam is reflected from a surface, the angle of incidence is the angle between the incident, or approaching, ray and a line perpendicular to the surface at this point. A Twig Science Glossary Film. Key scientific terms...
Curated Video
Angle of reflection
When a ray or beam is reflected from a surface, the angle of reflection is the angle made between the reflected ray and a line perpendicular to the surface at the point of reflection. A Twig Science Glossary Film. Key scientific terms...
Curated Video
Hot spot
A fixed place within the mantle or oceanic lithosphere where rocks melt to generate magma. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science...
Curated Video
Electricity: Supply and Demand
As demand for electricity rises, supply can become jeopardised. With electricity difficult to store, how to power companies manage this delicate balancing act? Earth Science - Earth's Resources - Learning Points. Electricity producers...
Curated Video
Centripetal Force: How Central Forces Cause Objects to Spin or Turn
What are central forces and how do they make objects spin or turn? Physics - Forces - Learning Points. A centripetal force makes an object follow a circular path. The moment of inertia is the resistance of an object when the speed of...
Curated Video
Maths and the Mona Lisa
See the Golden Ratio in the Mona Lisa and how it has contributed to the painting becoming the most viewed artwork in the world. Maths - Measurement A Twig Math Film. Reinforce and extend the learning required by the curriculum. Twig’s...
Curated Video
Straight Lines: Bee Lines
Why do bees fly in straight lines, and why does man now copy nature? Maths - Space A Twig Math Film. Reinforce and extend the learning required by the curriculum. Twig’s context films show abstract concepts in action in the real world.
Curated Video
Painting By Numbers
See how two simple mathematical principles allowed artists to create the feeling of space within two-dimensional paintings. Maths - Space A Twig Math Film. Reinforce and extend the learning required by the curriculum. Twig’s context...
Curated Video
Cartesian Coordinates
What do mathematicians imagine a space with four dimensions would look like? Discover the coordinates that are used to describe space, and how these extend to the 4th dimension. Maths - Space A Twig Math Film. Reinforce and extend the...
Curated Video
Where is the Centre of a Triangle?
The answer is not as straight-forward as it might seem, because all triangles have more than one centre! How many centres does a triangle have, and how do you find them? Maths - Shape A Twig Math Film. Reinforce and extend the learning...
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The History of the Golden Ratio
How the Golden Ratio was discovered and used through time, from architecture to art to music. Maths - Measurement A Twig Math Film. Reinforce and extend the learning required by the curriculum. Twig’s context films show abstract concepts...
Curated Video
The Beauty Formula
While it might seem that beauty is in the eye of the beholder, two universal factors transcend cultures. Discover how symmetry and proportion relate to our perception of attractiveness. Maths - Measurement A Twig Math Film. Reinforce and...
Curated Video
Imaginary Numbers
Why did mathematicians invent imaginary numbers, and why have they become so important today? Maths - Number A Twig Math Film. Reinforce and extend the learning required by the curriculum. Twig’s math films show abstract concepts in...
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Decimal Places: Photofinish
The story of a 60m sprint which, without decimals, would have resulted in a dead-heat. Maths - Number A Twig Math Film. Reinforce and extend the learning required by the curriculum. Twig’s context films show abstract concepts in action...
Curated Video
The Mirror Lines of the Taj Mahal
Recreating the mirror lines of the Taj Mahal using coordinates to investigate reflective symmetry. Maths - Shape A Twig Math Film. Reinforce and extend the learning required by the curriculum. Twig’s math films show abstract concepts in...
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Centre of Gravity: Finding the Balance Point of Irregular Objects
We use a plumb line and hook to find the centre of gravity of an irregularly shaped piece of card. A hole is punched in the card and it is suspended from the hook. A plumb line is used to let us draw the vertical line under the hole on...
Curated Video
Leaf Chromatography
We separate the different pigments in a beech leaf using chromatography. The leaf is broken up and ground with sand and propanone before being transferred to some chromatography paper. This is then lowered into pigment solvent and we can...
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Precipitate Formation
We add potassium iodide and lead(II) nitrate to the opposite sides of a Petri dish filled with water to see how quickly they diffuse. When added to the water, the chemicals spread through the dish and when they meet they react to form...
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Hyperbolic Geometry
What is Euclidean geometry, and how have descriptions of space moved on since Euclid's time? New types of geometry describe a strangely familiar curved space. Maths - Shape A Twig Math Film. Reinforce and extend the learning required by...
Curated Video
Longitude and latitude – Did you know?
Did you know that the Tropic of Cancer and the Tropic of Capricorn are lines of latitude? People and places - Mapping - Latitude and longitude A Twig Tidbit Film - Did you know? A fascinating fact is revealed.
Curated Video
Time Zones: The International Date Line
Did you know that the International Date Line is not straight? People and places - Mapping - Time zones A Twig Tidbit Film - Did you know? A fascinating fact is revealed.
Curated Video
Longitude and latitude – Odd one out
Four countries are shown, but which is the odd one out? People and places - Mapping - Latitude and longitude A Twig Tidbit Film - Odd one out. The children have to work out which of four images is the odd one out.
Curated Video
International date line
Welcome to the Alaskan island where, thanks to the international date line, you can look back in time. People and places - Mapping - Time zones Learning Points The imaginary line that marks the point where the date changes is known as...