This slideshow covers the "Keeping Healthy" module from the 2012 GCSE OCR 21st Century unit and includes: microbes, disease, bacteria growth, producing antibodies, specific antibodies, vaccinations, antimicrobials, fungi, how bacteria become immune, MRSA and other superbugs, researching new medicine ...more

This slideshow covers the "Keeping Healthy" module from the 2012 GCSE OCR 21st Century unit and includes: microbes, disease, bacteria growth, producing antibodies, specific antibodies, vaccinations, antimicrobials, fungi, how bacteria become immune, MRSA and other superbugs, researching new medicines, placebos, double circulation, the circulatory system, blood vessels, measuring blood pressure, heart disease, high blood pressure, heart disease and lifestyle, drugs, homeostasis, maintaining body temperature, controlling water content, how water content is controlled using hormones, negative feedback....hide

Use this slideshow to help you teach the B3 module from the 2011 OCR 21st Century course! It covers: definition of a species, competition between species, adaptation to the environment, how the sun's energy enters a food chain through photosynthesis, food chains, food webs, how food webs are affect ...more

Use this slideshow to help you teach the B3 module from the 2011 OCR 21st Century course! It covers: definition of a species, competition between species, adaptation to the environment, how the sun's energy enters a food chain through photosynthesis, food chains, food webs, how food webs are affected by a change in population, energy flow and efficiency in a food chain, extinct species, factors that can cause extinction, recycling living organisms, the carbon cycle, decomposers, the nitrogen cycle, measuring environmental changes, pollution indicators, the development of life on Earth, mutations in DNA, natural selection, selective breeding, evolution, evidence for evolution, sharing DNA with other species, Darwin's views compared to those of Lamarck and Weisman, biodiversity, classifying species, protecting endangered species, sustainable development, monoculture crops, recycling and using less materials....hide

Genes, chromosomes and DNA, how genes work, the role of DNA, variation, inherited and environmental forms of variation, sexual reproduction, how sex is determined, definitions of words like recessive, dominant, heterozygous and homozygous, the development of sexual organs, monohybrid cross diagrams ...more

Genes, chromosomes and DNA, how genes work, the role of DNA, variation, inherited and environmental forms of variation, sexual reproduction, how sex is determined, definitions of words like recessive, dominant, heterozygous and homozygous, the development of sexual organs, monohybrid cross diagrams and punnett squares, determining eye colour and other inherited characteristics, inherited diseases such as cystic fibrosis and Huntingdon's disease, family pedigree charts, genetic testing, the ethics of genetic testing, embryo selection, cloning plants, cloning animals, identical twins, stem cell research....hide

This slideshow covers the 2011 OCR 21st Century C2 module, including: properties of materials including plastics, nylon and rubber, using different natural materials, drawing chemical formulae, simple chemical reactions, hydrocarbons and crude oil, fractional distillation, forces between molecules, ...more

This slideshow covers the 2011 OCR 21st Century C2 module, including: properties of materials including plastics, nylon and rubber, using different natural materials, drawing chemical formulae, simple chemical reactions, hydrocarbons and crude oil, fractional distillation, forces between molecules, polymers, uses of addition polymers, structure of plastics, modifying plastics, nanotechnology, how nanoparticles are formed, examples of nanotechnology in sport and medicine, nanoscience and health implications....hide

The composition of our atmosphere, constituents of air, the evolution of our atmosphere and the role of volcanoes and plants, carbon dioxide in the atmosphere and how it is changing, pollution, nitrogen monoxide and dioxide, carbon monoxide, sulfur dioxide, fuels, burning hydrocarbons, using oxygen ...more

The composition of our atmosphere, constituents of air, the evolution of our atmosphere and the role of volcanoes and plants, carbon dioxide in the atmosphere and how it is changing, pollution, nitrogen monoxide and dioxide, carbon monoxide, sulfur dioxide, fuels, burning hydrocarbons, using oxygen in welding torches, conservation of mass in reactions, incomplete combustion, removing pollution, removing sulfur, wet scrubbing, reducing pollution from vehicles, using alternative fuels....hide

This file covers the "Radiation and life" unit (P2) from the 2011 OCR 21st Century syllabus and includes: the basics of radiation, light as photons, the electromagnetic spectrum, high and low energy photons, intensity and what affects it, ionisation, mobile phones and their dangers, uses of microwav ...more

This file covers the "Radiation and life" unit (P2) from the 2011 OCR 21st Century syllabus and includes: the basics of radiation, light as photons, the electromagnetic spectrum, high and low energy photons, intensity and what affects it, ionisation, mobile phones and their dangers, uses of microwaves, how microwaves warm up food, radioactivity, the dangers of UV, ozone, the ozone layer, suncream, absorbing x rays, global warming, principal frequencies, the Greenhouse Effect, future temperature predictions due to global warming, the possible effects of global warming, the carbon cycle, balancing carbon dioxide levels, using radio waves and microwaves in communication, analogue and digital signals, transmitting information using light and EM waves as carriers, storing digital signals, the "byte" and its definition....hide

Use this slideshow to help you teach sustainable energy, including: consumption of fuels, definition of a fuel, renewable and non-renewable fuels, pollution, using electricity, calculating power, the cost of electricity, reading electricity meters, different types of energy, energy changes in differ ...more

Use this slideshow to help you teach sustainable energy, including: consumption of fuels, definition of a fuel, renewable and non-renewable fuels, pollution, using electricity, calculating power, the cost of electricity, reading electricity meters, different types of energy, energy changes in different devices, efficiency, Sankey diagrams, how generators work, using fuels in power stations, efficiency of power stations, nuclear power stations, ionisation, dangers of radioactive waste, radioactive contamination, turning generators directly such as in wind turbines and hydroelectric schemes, the National Grid, choosing the right power station, meeting demand, solar power, geothermal power, renewable and non-renewable fuels compared, how supply of different fuels has changed....hide

The eight planets in our solar system and their relatives positions and orbits, asteroids, comets, summary of the solar system, relative sizes, ages and distances of the sun compared to the Milky Way and the universe, how stars are formed, observing the universe, the light year, relative distances o ...more

The eight planets in our solar system and their relatives positions and orbits, asteroids, comets, summary of the solar system, relative sizes, ages and distances of the sun compared to the Milky Way and the universe, how stars are formed, observing the universe, the light year, relative distances of nearby galaxies, measuring distances in space using brightness and parallax, problems in measuring these distances, the size of the Earth compared to stars, how the universe began, evidence for the Big Bang theory, red shift explained, Hubble's Law, the end of the universe, evidence for the age of the Earth, continental drift, tectonic theory, forming mountains, movement of the crust, sea floor spreading, magnetic reversal patterns, plate movements, the structure of the Earth, using seismic waves to investigate the Earth's structure, waves, transverse and longitudinal waves, P waves and S waves, wave speed, amplitude, frequency and wavelength of waves....hide