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Maths
English language
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Chapter Overview
537 Lessons
3222 Exercises
Maths
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Mathematical structure and arguments
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Disproof by counterexample
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Proof by deduction
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Proof by exhaustion
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English language
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Register and degrees of formality
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Lexis and semantics
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Discourse
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Pragmatics
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Biology
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Carbohydrates: types, structure and function
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The structure and function of lipids
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The structure and function of proteins
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Enzymes: activation energy, properties and structure
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Physics
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Physical quantities and units
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How to plan an experiment
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Hazards, risks and results
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Analysing data
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Chemistry
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The atom: history, structure and isotopes
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Relative masses and mass spectrometry
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Electronic structure: shells and orbitals
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Atomic emission spectra
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