Curated Video
Hero's Engine
We use a Hero's engine model to show how equal and opposite forces can cause propulsion. Two holes are pierced in a metal bottle and some water is added. This is suspended above a Bunsen burner, and as the water boils and leaves the...
Curated Video
Dry Ice and Magnesium
We use magnesium and blocks of dry ice to show how a redox reaction occurs. A cavity in a block of dry ice is filled with coils of magnesium ribbon, which are set alight. A second block is then placed on top, but instead of this putting...
Curated Video
Ionic Bonding
How metals and non-metals combine to form compounds with unique and very different properties. Chemistry - Atoms And Bonding - Learning Points. An electrically charged atom is called an ion. Ionic bonds are very strong. Ions are formed...
Curated Video
Extraction of Aluminium
Explore the difficulties of extracting aluminium from its ore, and how the vast quantities of heat and electricity generated by electrolysis allow this to happen. Chemistry - ReactionsLearning Points. Aluminium is difficult to extract...
Curated Video
Mars: Under the Ice
Scientists have found microbes frozen deep in the Antarctic ice sheets, in conditions very similar to the red planet's surface. Could life exist on Mars, in suspended animation? Physics - Universe - Learning Points. In 2001, a frozen...
Curated Video
What Are Magnets?
What are the properties of magnets, and why are they useful to us? Physics - Electricity And Circuits - Learning Points. A permanent magnet is a piece of metal that possesses a magnetic field. The magnetic field is strongest at the...
Curated Video
How Do Generators Work?
Discover how simple magnets and wires can be used to create electricity - and how this principle is now used in national power supplies. Physics - Electricity And Circuits - Learning Points. In 1835 the scientist Michael Faraday made an...
Curated Video
Ionic bond
Very strong chemical bonds between oppositely charged ions. 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
Delocalised electrons
In a metal, each metal atom readily gives up its outer shell electrons, resulting in a sea of free electrons flowing throughout a lattice of positively charged metal ions. A Twig Science Glossary Film. Key scientific terms defined in...
Curated Video
What's inside the Earth?
Let's take a journey inside the Earth and explore the different layers – crust, mantle, outer core and inner core. Our universe - Planet Earth - What's inside the Earth? Learning Points The internal structure of the Earth consists of...
Curated Video
Making steel
Find out how steel is made. The world around us - Exploring materials - How do we get materials? Learning Points Materials can come from the Earth, animals and plants. Humans can turn raw materials into finished product. A Twig Junior...
Curated Video
Liquids – Did you know?
Did you know that mercury has a low melting point and is the only metal which is liquid at room temperature? Material processes - Solids, liquids and gases - Liquids Learning Points Mercury is the only metal that is a liquid at room...
Curated Video
Heat transfer – Did you know?
Did you know that wooden or plastic utensils are used when cooking food because they are insulators? Physical processes - Energy and energy transfer - Heat transfer Learning Points Metal is a thermal conductor. Wood and plastic are...
Curated Video
Magnetism – Did you know?
Did you know that when a coil of metal moves within a magnetic field it produces electricity? Physical processes - Electricity and magnetism - Magnetism Learning Points A coil of metal moving within a magnetic field produces electricity....
Curated Video
Choosing suitable materials – Spot the...
Six different objects are shown on screen ... can you spot the permeable materials? Material processes - Classifying materials - Choosing suitable materials Learning Points Permeability is a property of some materials. A Twig Tidbit Film...
Curated Video
White light – Spot the...
Six different images are shown on screen, three of them refract light ... but which ones? Physical processes - Light - White light Learning Points Glass, diamond and water refract light. Wood, stone and metal do not refract light. A Twig...
Curated Video
Dangers of sound – Odd one out
Four different materials are shown, but which can absorb the most sound? Physical processes - Sound - Dangers of sound A Twig Tidbit Film - Odd one out. The children have to work out which of four images is the odd one out.
Curated Video
Magnetism
Find out how magnetic and non-magnetic materials are separated at a junkyard using a giant magnet. Physical processes - Electricity and magnetism - Magnetism Learning Points Magnetism is a force that acts upon magnetic material. A...
Curated Video
Heat energy
Discover that heat energy can turn a solid metal into liquid. Physical processes - Energy and energy transfer - Heat and temperature Learning Points Heat energy always travels from a hotter to a cooler area. Heat energy causes molecules...
Curated Video
Thermal conductors
Why does metal expand when it gets hot? Material processes - Changing materials - Expansion and conduction Learning Points Conductors are materials that allow energy to flow easily through them. Thermal conductors allow heat energy to...
Visual Learning Systems
Magnets and Static Electricity
This video explores cause and effect relationships of magnetism, as well as electric interactions. The program explains how students can conduct an activity that illustrates how magnets exhibit forces on specific types of matter, and...
Curated Video
History of Toys and Toy Making for Kids | Bedtime History
Embark on a delightful journey through the enchanting history of toys and the art of toy making. From ancient civilizations to modern-day marvels, explore how toys have evolved through the ages, reflecting the societies and technologies...
Curated Video
Chemical Equations and Reactions: The Chemical Reactions
By the end of this learning object, the student will be able to: Summarize the important points of chemical equations and reactions.28728
Curated Video
Chemical Compounds: Salts
By the end of this learning object, the student will be able to: Explain the meaning of salts and their properties.14004