Curated Video
Biology - How the Kidneys Work - (Kidneys Part 1/3) #27
This video covers: - The 3 main functions of the kidneys: 1) removing waste, 2) regulating levels of ions, and 3) regulating levels of water - How the kidneys can achieve all of this using filtration and selective reabsorption - How...
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GCSE Chemistry - Esters #59
This video covers: - What esters are - How they're made from carboxylic acids and alcohols - Their properties Exam board specific info: AQA - Everything is relevant to your course! You only need to know the example of ethyl ethanoate....
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GCSE Chemistry - Alcohols #57
This video covers: - Alcohols are a homologous series of organic compounds with an OH functional group - How to name them - Their properties: flammable, soluble and they can be oxidised - Their uses: as fuels and solvents Exam board...
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GCSE Chemistry - Addition Reactions of Alkenes #55
This video covers: - The idea that the carbon-carbon double bond can break, which allows the carbons to bond to new atoms - How alkenes react with hydrogen to form alkanes - How alkenes react with water to form alcohols - How alkenes...
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GCSE Chemistry - Addition Polymers & Polymerisation #56
This video covers: - How the carbon carbon double bond allows alkenes to form addition polymers - How to write reactions for polymerisation - How to draw the monomers, polymers and repeat units - The conditions for addition...
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GCSE Biology - Pyramids of Biomass #87
This video covers: - The idea that biomass is just the mass of living organisms - Pyramids of biomass show the amount of biomass at each trophic level of a food chain - Why the amount of biomass decreases as you go up the food chain -...
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GCSE Biology - Pros and Cons of Sexual and Asexual Reproduction (Part 2) #72
This video covers: - Brief summary of sexual and asexual reproduction - The advantages and disadvantages of each Exam board specific info: AQA - Separate/triple science only IGCSE Edexcel - Separate/triple science and higher tier only -...
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GCSE Biology - How We Control Our Body Temperature #55
This video covers: - Why we need to regulate our body temperature - How the thermoregulatory centre in the brain works - How we warm ourselves up when we're too cold - How we cool ourselves down when we're too hot Exam board specific...
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GCSE Biology - Gregor Mendel and the History of Genetics #76
This video covers: - The experiment that Mendel did with pea plants, looking at pea colour, flower colour, and height. - How Mendel discovered hereditary units, which could be recessive or dominant - An overview of when chromosomes, and...
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Fractions Part 1 - How to Simplify Fractions #8
This video is part 1 of our series on fractions. It covers what fractions really mean i.e. parts of a whole number, as well as how to simplify them. We also explain the terms numerator and denominator. This video is suitable for maths...
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GCSE Chemistry - Atom Economy #31
This video covers: - The idea that atom economy is a measure of the amount of starting materials that end up as useful products - How to calculate atom economy - Why we should care about it - How to improve atom economy Exam board...
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GCSE Biology - What are DNA Mutations? #67
This video covers: - What genetic mutations are - What causes mutations e.g. carcinogens and harmful radiation - What the consequences can be - The 3 types of mutations: substitution, addition, deletion Exam board specific info: AQA -...
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GCSE Biology - Plant Hormones - Uses of Auxin, Gibberellin and Ethene #53
This video covers: - How we can use plant hormones to control growth in plants - How we can use Auxins to stimulate plants to grow, or kill weeds - Uses of Gibberellin to control dormancy, induce flowering and grow larger fruit - How we...
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GCSE Biology - How the Eye Works (Part 2) - Accommodation #32
This video covers: - How the eye focusses light onto the retina, which is known as accommodation - How the ciliary muscles and suspensory ligaments work Exam board specific info: AQA - Separate science only IGCSE Edexcel - Separate...
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GCSE Maths - Percentage Increase and Decrease (Multiplier Method) #93
This video covers: - How to increase or decrease a number by a given percentage. We cover 2 methods: 1) Find the percentage change, and then add or subtract it from the original 2) The multiplier method This video is suitable for maths...
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GCSE Physics - Density #27
This video covers - The concept of density - The equation for density and how to use it - How to measure density for: - Regular solids - Irregular solids - Liquids General info: - Suitable for all GCSE and IGCSE courses - Suitable for...
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GCSE Physics - Contact and Non-Contact Forces #40
This video covers: - What contact forces are - Examples - friction, air resistance, tension, normal reaction force - What non-contact forces are - Examples - gravitational, electrostatic, magnetic General info: - Suitable for all GCSE...
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GCSE Maths - Volumes of Cylinders and Prisms #112
This video covers how to calculate the volume of cylinders and prisms. It includes examples of each and a sample exam question. This video is suitable for maths courses around the world. KS3 - All on your course GCSE Foundation - All on...
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GCSE Maths - Using Ratios to Find the Coordinates of a Point On a Line #73
This video explains how to find the coordinates of a point that lies a certain ratio along a line, e.g. "If A is (3, 4) and B is (-7, 8), and C lies somewhere on the line AB such that AC : CB is 3 : 1, what are the coordinates of C?". We...
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GCSE Maths - Types of Numbers #1
This video will look at: The difference between rational and irrational numbers. The 4 main types of rational numbers, which are integers, fraction, terminating decimals and recurring decimals. 2 examples of irrational numbers: surds and...
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GCSE Maths - Simplifying Harder Ratios (Decimals, Mixed Units and 1:n) - Part 2 #82
This video covers: - How to simplify more complicated ratios including: - Ratios with decimals in e.g. 1.5 : 4.5 - Ratios with mixed units e.g. 1.6cm : 12mm - Simplifying to the form 1:n e.g. simplify 3 : 20 to the from 1 : n. This video...
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GCSE Maths - How to Simplify Expressions by Collecting Like Terms #28
This video covers how to simplify algebraic expressions like '5 + 3a - 2 + 2a' by collecting like terms. This video is suitable for maths courses around the world. KS3 - All on your course GCSE Foundation - All on your course GCSE Higher...
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GCSE Maths - How to Simplify Algebraic Expressions #27
This video covers how to simplify algebraic expressions like '2p x 3 x 5p x 2' by multiplying together the numbers and the letters. This video is suitable for maths courses around the world. KS3 - All on your course GCSE Foundation - All...
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GCSE Maths - How to Expand Single Brackets #35
This video covers how to expanding single brackets, with 1 term on the outside, and 2 or more terms on the inside of the bracket. This is part 1/3 in our series on expanding brackets. This video is suitable for maths courses around the...