Powerpoint lecture covering the following in a modern, concise format: Specification Point 4.3.1.8 - Antibiotics and painkillers. Specification Point 4.3.1.9 - Discovery and development of drugs. Complete set of Chapter 3 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 4.3.1.6 - Human defence systems. Specification Point 4.3.1.7 - Vaccination. Complete set of Chapter 3 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 4.18P - Describe the energy transfers involved in generating electricity. Specification Point 4.19P - Describe the advantages and disadvantages of methods of large-scale electricity production from various renewable and non-renewable resources. Complete set of Chapter 4 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 6.8 - Know that an electric current in a conductor produces a magnetic field around it. Specification Point 6.12 - Understand why a force is exerted on a current-carrying wire in a magnetic field, and how this effect is applied in simple D.C. electric motors and loudspeakers. Specification Point 6.13 - Use the left-hand rule to predict the direction of the resulting force when a wire carries a current perpendicular to a magnetic field. Specification Point 6.14 - Describe how the force on a current-carrying conductor in a magnetic field changes with the magnitude and direction of the field and current. Specification Point 6.15 - Know that a voltage is induced in a conductor or a coil when it moves through a magnetic field or when a magnetic field changes through it and describe the factors that affect the size of the induced voltage. Specification Point 6.16 - Describe the generation of electricity by the rotation of a magnet within a coil of wire and of a coil of wire within a magnetic field, and describe the factors that affect the size of the induced voltage. Complete set of Chapter 6 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 1.18 - Know and use the relationship between weight, mass and gravitational field strength. Specification Point 1.19 - Know that the stopping distance of a vehicle is made up of the sum of the thinking distance and the braking distance. Specification Point 1.20 - Describe the factors affecting vehicle stopping distance, including speed, mass, road condition and reaction time. Specification Point 1.21 - Describe the forces acting on falling objects and explain why falling objects reach a terminal velocity. Complete set of Chapter 1 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 1.15 - Calculate the resultant force of forces that act along a line. Specification Point 1.16 - Know that friction is a force that opposes motion. Specification Point 1.17 - Know and use the relationship between unbalanced force, mass and acceleration. Complete set of Chapter 1 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 1.11 - Describe the effects of forces between bodies such as changes in speed, shape or direction. Specification Point 1.12 - Identify different types of force such as gravitational or electrostatic. Specification Point 1.13 - Understand how vector quantities differ from scalar quantities. Specification Point 1.14 - Understand that force is a vector quantity. Complete set of Chapter 1 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 1.2.1 - Understand the main types of business ownership. Complete set of Chapter 1 Lectures are available.

Complete set of companion PDF worksheets for Edexcel IGCSE Physics (4PH1) Chapter 7 - Radioactivity. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Three worksheets included: 28 - Radioactivity Part 1 29 - Radioactivity Part 2 30 - Fission and Fusion

Complete set of companion PDF worksheets for Edexcel IGCSE Physics (4PH1) Chapter 8 - Astrophysics. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Three worksheets included: 31 - The Universe 32 - The Evolution of Stars 33 - Cosmology

Powerpoint lecture covering the following in a modern, concise format: Specification Point 8.2 - Understand the positive and negative impacts of the growth of global tourism, including mass tourism, on the environment, economy and people of destination areas. Complete set of Chapter 9 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 7.1 - Understand the causes of natural climate change and how human activities can cause the enhanced greenhouse effect. Complete set of Chapter 8 Lectures are available.

PDF lecture covering the following in a modern, concise format: Specification Point 7.2 - Understand the social, economic and environmental impacts of desertification. Specification Point 7.2 - Understand the social, economic and environmental impacts of deforestation. Specification Point 7.2 - Understand the negative effects that climate change is having on fragile environments and people. Complete set of Chapter 8 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 6.2 - Understand factors affecting urban land use patterns: their locational needs, accessibility and land values. Specification Point 6.2 - Understand urban challenges in a named developed country: food, energy, transport and waste disposal demands, concentrated resource consumption, segregation. Specification Point 6.2 -Understand urban challenges in a named developing country or emerging country: squatter settlements, informal economy, urban pollution, and low quality of life. Complete set of Chapter 7 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 5.1 - Understand examples of goods and services provided for people by natural ecosystems (timber, tourism, food, energy, water resources, health services, natural protection and climate regulation). Specification Point 5.1 - Understand how humans use, modify and change ecosystems and rural environments to obtain food through farming systems (arable/pastoral, commercial/subsistence, intensive/extensive). Complete set of Chapter 6 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 5.2 - Understand the factors leading to rural changes in a named developed country. Specification Point 5.2 - Understand the factors leading to rural changes in a named developing or emerging country. Complete set of Chapter 6 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 4.1 - Understand the reasons for the changes in the numbers of people employed in each economic sector, including the availability of raw materials, globalisation, mechanisation, demographic changes and government policies. Specification Point 4.2 - Understand the positive and negative impacts of economic sector shifts in a named developed and a named developing or emerging country. Complete set of Chapter 5 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 2.2 - Understand how small and large scale coastal ecosystems are threatened by people and their activities. Complete set of Chapter 2 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 3.2 - Understand the reasons why people continue to live in areas at risk from hazard events. Specification Point 3.2 - Understand that some countries are more vulnerable (physically, socially and economically) than others to the impacts of natural hazards. Specification Point 3.2 - Understand the shorter-term and longer-term impacts of one earthquake, one volcano and one tropical cyclone hazard. Complete set of Chapter 3 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 1.3 - Understand the causes of river flooding, including rainfall intensity, seasonal variations in discharge due to monsoons or snowmelt, relief, urbanisation, and the prediction and prevention of flooding. Complete set of Chapter 1 Lectures are available.