Powerpoint lecture covering the following in a modern, concise format: Specification Point 7.17 - Know that nuclear reactions, including fission, fusion and radioactive decay, can be a source of energy. Specification Point 7.18 - Understand how a nucleus of U-235 can be split by collision with a neutron, and that this process releases energy as kinetic energy of the fission products. Specification Point 7.19 -Know that the fission of U-235 produces two radioactive daughter nuclei and a small number of neutrons. Specification Point 7.20 - Describe how a chain reaction can be set up if the neutrons produced by one fission strike other U-235 nuclei. Specification Point 7.21 - Describe the role played by the control rods and moderator in the fission process. Specification Point 7.22 - Understand the role of shielding around a nuclear reactor. Specification Point 7.23 - Explain the difference between nuclear fusion and nuclear fission. Specification Point 7.24 - Describe nuclear fusion as the creation of larger nuclei resulting in a loss of mass from smaller nuclei, accompanied by a release of energy. Specification Point 7.25 - Know that fusion is the energy source for stars. Specification Point 7.26 - Explain why nuclear fusion does not happen at low temperatures and pressures, due to electrostatic repulsion of protons. Complete set of Chapter 7 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 3.1.2.5 - Balanced equations and associated calculations. Practical 1 - Make up a volumetric solution and carry out a simple acid–base titration. Complete set of Chapter 1 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 3.1.8.1 - Born-Haber cycles. Complete set of Chapter 6 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 3.2.5.3 - The shapes of complex ions. Specification Point 3.2.5.4 - The formation of coloured ions. Complete set of Chapter 7 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 3.4.4 - Genetic diversity and adaptation. Complete set of Chapter 4 Lectures are available.

Complete set of concise, modern presentations for AQA A Level Biology (7401 and 7402) Chapter 3 - The Exchange of Substances. Contains colour coded specification points. Nine presentations included: 18 - Size and Surface Area 19 - Gas Exchange 20 - Gas Exchange in Humans 21 - Lung Disease 22 - Digestion and Absorption 23 - Haemoglobin 24 - The Circulatory System 25 - Cardiovascular Disease 26 - Xylem and Phloem

Powerpoint lecture covering the following in a modern, concise format: Specification Point 1.55C - Understand why covalent compounds do not conduct electricity. Specification Point 1.56C - Understand why ionic compounds conduct electricity only when molten or in aqueous solution. Specification Point 1.57C - Know that anion and cation are terms used to refer to negative and positive ions respectively. Specification Point 1.58C - Describe experiments to investigate electrolysis, using inert electrodes, of molten compounds and aqueous solutions and to predict the products. Specification Point 1.59C - Write ionic half-equations representing the reactions at the electrodes during electrolysis and understand why these reactions are classified as oxidation or reduction. Specification Point 1.60C - Practical: investigate the electrolysis of aqueous solutions. Complete set of Chapter 3 Lectures are available.

Complete set of concise, modern presentations for Edexcel IGCSE Geography (4GE1) Chapter 8 - Fragile Environments and Climate Change. Contains colour coded specification points with custom vector graphics. Five presentations included: 49 - Fragile Environments 50 - Climate Change 51 - Impacts on Fragile Environments 52 - Responding to Fragile Environments 53 - Responding to Climate Change

Complete set of concise, modern presentations for Edexcel IGCSE Geography (4GE1) Chapter 7 - Urban Environments. Contains colour coded specification points with custom vector graphics. Six presentations included: 43 - Urbanisation 44 - Megacities 45 - Urban Challenges 46 - The Rural-Urban Fringe 47 - Sustainable Urban Living 48 - Urban Managers

Companion PDF worksheet for Edexcel IGCSE Chemistry Lecture 2 - Solutions and Solubility. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Specification Point 1.4 - Understand how the results of experiments involving the dilution of coloured solutions and diffusion of gases can be explained. Specification Point 1.5 - Know what is meant by the terms: solvent, solute, solution and saturated solution. Complete set of Chapter 1 Worksheets are available.

Complete set of companion PDF worksheets for Edexcel IGCSE Chemistry (4CH1) Chapter 1 - Particles and Mixtures. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Six worksheets included: 1 - States of Matter 2 - Solutions and Solubility 3 - Calculating Solubility 4 - Elements, Compounds and Mixtures 5 - Methods of Separation 6 - Paper Chromatography

Companion PDF worksheet for Edexcel IGCSE Chemistry Lecture 11 - Concentrations and Volumes. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Specification Point 1.34C - Understand how to carry out calculations involving amount of substance, volume and concentration of solution. Specification Point 1.35C - Understand how to carry out calculations involving gas volumes and the molar volume of a gas. Complete set of Chapter 2 Worksheets are available.

Companion PDF worksheet for Edexcel IGCSE Chemistry Lecture 12 - Ionic Bonding. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Specification Point 1.37 - Understand how ions are formed by electron loss or gain. Specification Point 1.38 - Know the charges of several atomic and molecular ions. Specification Point 1.39 - Write formulae for compounds formed between the ions listed in 1.38. Specification Point 1.40 - Draw dot-and-cross diagrams to show the formation of ionic compounds by electron transfer, limited to combinations of elements from groups 1, 2, 3, 5, 6 and 7. Specification Point 1.41 - Understand ionic bonding in terms of electrostatic attractions. Specification Point 1.42 - Understand why compounds with giant ionic lattices have high melting and boiling points. Specification Point 1.43 - Know that ionic compounds do not conduct electricity when solid, but do conduct electricity when molten and in aqueous solution. Complete set of Chapter 3 Worksheets are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 1.52C - Know how to represent a metallic lattice by a 2-D diagram. Specification Point 1.53C - Understand metallic bonding in terms of electrostatic attractions. Specification Point 1.54C - Explain typical physical properties of metals, including electrical conductivity and malleability. Complete set of Chapter 3 Lessons are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 2.15 - Understand how metals can be arranged in a reactivity series based on their reactions with water or dilute acid. Specification Point 2.16 - Understand how metals can be arranged in a reactivity series based on displacement reactions. Specification Point 2.17 - Know the order of reactivity of these metals: potassium, sodium, lithium, calcium, magnesium, aluminium, zinc, iron, copper, silver, and gold. Specification Point 2.18 - Know the conditions under which iron rusts. Specification Point 2.19 - Understand how the rusting of iron may be prevented by barrier methods, galvanising and sacrificial protection. Specification Point 2.20 - Understand the terms oxidation, reduction, redox, oxidising agent and reducing agent in terms of the gain or loss of oxygen and the loss or gain of electrons. Specification Point 2.21 - Practical: investigate reactions between dilute hydrochloric and sulfuric acids and metals (e.g. magnesium, zinc and iron). Complete set of Chapter 4 Lessons are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 1.55C - Understand why covalent compounds do not conduct electricity. Specification Point 1.56C - Understand why ionic compounds conduct electricity only when molten or in aqueous solution. Specification Point 1.57C - Know that anion and cation are terms used to refer to negative and positive ions respectively. Specification Point 1.58C - Describe experiments to investigate electrolysis, using inert electrodes, of molten compounds and aqueous solutions and to predict the products. Specification Point 1.59C - Write ionic half-equations representing the reactions at the electrodes during electrolysis and understand why these reactions are classified as oxidation or reduction. Specification Point 1.60C - Practical: investigate the electrolysis of aqueous solutions. Complete set of Chapter 3 Lessons are available.

Complete set of companion PDF worksheets for Edexcel IGCSE Chemistry (4CH1) Chapter 5 - Acids, Bases and Salts. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Five worksheets included: 21 - Acids and Alkalis 22 - Titrations 23 - Acids, Bases and Salts 24 - Making Salts 25 - Chemical Tests

Powerpoint lecture covering the following in a modern, concise format: Specification Point 4.3.4 - Cognition and development. Vygotsky’s theory of cognitive development, including the zone of proximal development and scaffolding. Complete set of Chapter 11 Lectures are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 2.27 - Describe the structure and function of the human alimentary canal, including: the mouth oesophagus, stomach, small intestine, large intestine and pancreas. Specification Point 2.28 - Understand how food is moved through the gut by peristalsis. Complete set of Chapter 2 Lessons are available.

Companion PDF worksheet for Edexcel IGCSE Biology Lecture 15 - Digestion and Absorption. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Specification Point 2.29 - Understand the role of digestive enzymes, including the digestion of starch to glucose by amylase and maltase, the digestion of proteins to amino acids by proteases and the digestion of lipids to fatty acids and glycerol by lipases. Specification Points 2.30 and 2.31 - Understand that bile is produced by the liver and stored in the gallbladder. Understand the role of bile in neutralising stomach acid and emulsifying lipids. Specification Point 2.32 - Understand how the small intestine is adapted for absorption, including the structure of a villus. Complete set of Chapter 2 Worksheets are available.