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Tutor and author of apps and iBooks for high school science.
The Greenhouse Effect (Video)
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The Greenhouse Effect (Video)

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A short video/audio guide explaining the greenhouse effect: includes the physics of IR radiation, graphical evidence correlating long-term CO2 levels and temperature, reasons for recent increases (e.g. combustion of fossil fuels, deforestation, industrial farming). Designed for GCSE revision, this high res animation is comprehensive in its coverage, and can also be used on a large screen as your main teaching resource for the topic.
White Blood Cells (Video)
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White Blood Cells (Video)

(4)
A short video/audio guide that gets straight to the essence of this topic: the role and function of white blood cells. Designed for GCSE revision, this high res animation is comprehensive in its coverage, and can also be used on a large screen as your main teaching resource for the topic.
Phototropism (Video)
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Phototropism (Video)

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A short video/audio guide explaining why plants exhibit phototropism, and the role of auxins in this. Designed for GCSE revision, this high res animation is comprehensive in its coverage, and can also be used on a large screen as your main teaching resource for the topic.
Seismic Waves and the Earth's Crust (Video)
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Seismic Waves and the Earth's Crust (Video)

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A short video/audio guide explaining the physics of earthquakes: plate tectonics, characteristics of primary and secondary waves, seismometers and triangulation, shadow zone. Designed for GCSE revision, this high res animation is comprehensive in its coverage, and can also be used on a large screen as your main teaching resource for the topic.
Genes, DNA and Chromosomes (Video)
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Genes, DNA and Chromosomes (Video)

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A short video/audio guide explaining the essentials of genetics: the role of genes, chromosome structure, DNA, cell cloning and specialisation, sexual reproduction, X and Y gametes, variation. Designed for GCSE revision, this high res animation is comprehensive in its coverage, and can also be used on a large screen as your main teaching resource for the topic.
Life Cycle Of Stars Like The Sun (Video)
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Life Cycle Of Stars Like The Sun (Video)

(0)
A short video/audio guide explaining the life cycle of stars like our Sun: gravity brings dust and gas together; nuclear fusion forms protostar (H fuses to He); main sequence balances gravity and electromagnetic radiation; red giant, white dwarf and black dwarf phases end the cycle. Designed for test prep, this high res animation is comprehensive in its coverage, and can also be used on a large screen as your main teaching resource for the topic.
The Carbon Cycle (Video)
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The Carbon Cycle (Video)

(0)
A short video/audio guide explaining the carbon cycle. The animation carefully deals with all the concepts involved, systematically taking students through the standard diagram via an animated sequence describing photosynthesis, feeding, respiration, decomposition, fossilization, combustion. Designed for test prep, this high res animation is comprehensive in its coverage, and can also be used on a large screen as your main teaching resource for the topic.
 Adult Cell Cloning (Video)
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Adult Cell Cloning (Video)

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A short video/audio guide explaining adult cell cloning, with specific reference to Dolly the sheep. The animation also covers cloning, sexual and asexual reproduction, identical human twins. Designed for test prep, this high res animation is comprehensive in its coverage, and can also be used on a large screen as your main teaching resource for the topic.
Evolution by Natural Selection (Video)
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Evolution by Natural Selection (Video)

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A short video/audio guide covering the essentials of this topic: including variation, competition, adaptation, survival of the 'best adapted', isolation, speciation, Darwin's finches, the fossil record, pentadactyl limbs, Lamarck's theory, chance mutations in giraffe necks. Designed for GCSE revision, this high res animation is comprehensive in its coverage, and can also be used on a large screen as your main teaching resource for the topic.
Atomic Structure and Ionic Bonding (Video)
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Atomic Structure and Ionic Bonding (Video)

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A short video/audio guide explaining the essentials of atomic structure and ionic bonding, using sodium chloride as an example. Ideas covered include: atomic numbers, groups in the Periodic Table, electron shells, stability of noble gases, transfer of electrons, electrostatic force of attraction, giant lattice structure. Designed for GCSE revision, this high res animation is comprehensive in its coverage, and can also be used on a large screen as your main teaching resource for the topic.
Phototropism (Video)
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Phototropism (Video)

(0)
A short video/audio guide explaining why plants exhibit phototropism, and the role of auxins in this. Designed for test prep, this high res animation is comprehensive in its coverage, and can also be used on a large screen as your main teaching resource for the topic.
The National Grid (Video)
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The National Grid (Video)

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A short video/audio guide covering the basics of the National Grid: collisions of free electrons in metal wires heats the wire; energy is lost in transmission; power = voltage x current; step-up and step-down transformers; turns ratio calculations. Designed for GCSE revision, this high res animation is comprehensive in its coverage, and can also be used on a large screen as your main teaching resource for the topic.
Atomic Structure and Ionic Bonding (Video)
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Atomic Structure and Ionic Bonding (Video)

(0)
A short video/audio guide explaining the essentials of atomic structure and ionic bonding, using sodium chloride as an example. Ideas covered include: atomic numbers, groups in the Periodic Table, electron shells, stability of noble gases, transfer of electrons, electrostatic force of attraction, giant lattice structure. Designed for test prep, this high res animation is comprehensive in its coverage, and can also be used on a large screen as your main teaching resource for the topic.
Emulsions (Video)
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Emulsions (Video)

(0)
A short video/audio guide explaining the basics of emulsions: cooking oil, water and detergent as an example; hydrophilic/hydrophobic characteristics of emulsifiers; typical emulsions; health questions about food additives. Designed for test prep, this high res animation is comprehensive in its coverage, and can also be used on a large screen as your main teaching resource for the topic.
Cracking and Polymerization (Video)
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Cracking and Polymerization (Video)

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A short video/audio guide explaining the essentials of cracking and polymerization: e.g. cracking decane to produce octane and ethene; the bromine test; polymerization of propylene; properties and uses of HDPE and LDPE. Designed for test prep, this high res animation is comprehensive in its coverage, and can also be used on a large screen as your main teaching resource for the topic.
Metals (Video)
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Metals (Video)

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A short video/audio guide covering the basics of metals: properties and uses, the reactivity series, extraction methods (heating with carbon/electrolysis), precious metals. Designed for test prep, this high res animation is comprehensive in its coverage, and can also be used on a large screen as your main teaching resource for the topic.
Combustion (Video)
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Combustion (Video)

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A short video/audio guide explaining the essentials of combustion: exothermic reactions of short-chain hydrocarbons, complete and incomplete combustion, consequences of combustion (carbon monoxide, soot, acid rain, global warming), catalytic converters. Designed for test prep, this high res animation is comprehensive in its coverage, and can also be used on a large screen as your main teaching resource for the topic.
Energy Transfer and Energy Efficiency (Video)
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Energy Transfer and Energy Efficiency (Video)

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A short video/audio guide explaining the basics of energy transfer: energy is stored in different forms, transferring energy changes its form; law of conservation of energy; Sankey diagrams; inefficiencies in power stations; equation of energy efficiency. Designed for test prep, this high res animation is comprehensive in its coverage, and can also be used on a large screen as your main teaching resource for the topic.
Life Cycle Of Stars Like The Sun (Video)
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Life Cycle Of Stars Like The Sun (Video)

(0)
A short video/audio guide explaining the life cycle of stars like our Sun: gravity brings dust and gas together; nuclear fusion forms protostar (H fuses to He); main sequence balances gravity and electromagnetic radiation; red giant, white dwarf and black dwarf phases end the cycle. Designed for GCSE revision, this high res animation is comprehensive in its coverage, and can also be used on a large screen as your main teaching resource for the topic.
Electrolysis of Brine (Video)
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Electrolysis of Brine (Video)

(1)
A short video/audio guide covering the basics of electrolysis: electricity can decompose ionic compounds into elements; useful elements in brine, e.g. chlorine for PVC; negative ions give up electrons at the anode, positive ions take up electrons at the cathode; half equations of oxidation/reduction; chlorine and hydrogen molecules are discharged as gases; remaining solution is NaOH, a useful industrial substance. Designed for GCSE revision, this high res animation is comprehensive in its coverage, and can also be used on a large screen as your main teaching resource for the topic.