After a career in the City of London as a commodity trader, Serena Alexander has taught Mathematics since 1987, originally in both maintained and independent senior schools. From 1999 she taught at St. Paul's School for Boys, where she was Head of Mathematics at their Preparatory School, Colet Court, before moving first to Newton Prep as Deputy Head and then to Devonshire House as Headmistress. She has run many Mathematics conferences for prep school teachers. She is now an ISI reporting Inspector and consultant, with a particular focus on mathematics. In her spare time, Serena is often to be found afloat, sailing on the south coast and overseas, as well as being engaged in race management and helping at major regattas such as Cowes Week.

• Chapter 1: Investigations with numbersChapter 2: Working with numbersChapter 3: CalculationsChapter 4: Angles and trianglesChapter 5: Number puzzlesChapter 6: More about numbersChapter 7: FractionsChapter 8: Ratio and proportionChapter 9: Congruent and similar shapesChapter 10: DecimalsChapter 11: Fractions, decimals and percentagesChapter 12: Finding fractions of an amountChapter 13: PercentagesChapter 14: Negative numbersChapter 15: TransformationsChapter 16: FormulaeChapter 17: More fractionsChapter 18: Time and travelChapter 19: Line graphsChapter 20: 2D shapesChapter 21: Pie charts and tablesChapter 22: Perimeter and areaChapter 23: 3D shapesChapter 24: Averages

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After a career in the City of London as a commodity trader, Serena Alexander has taught Mathematics since 1987, originally in both maintained and independent senior schools. From 1999 she taught at St. Paul's School for Boys, where she was Head of Mathematics at their Preparatory School, Colet Court, before moving first to Newton Prep as Deputy Head and then to Devonshire House as Headmistress. She has run many Mathematics conferences for prep school teachers. She is now an ISI reporting Inspector and consultant, with a particular focus on mathematics. In her spare time, Serena is often to be found afloat, sailing on the south coast and overseas, as well as being engaged in race management and helping at major regattas such as Cowes Week.

• Chapter 1: Investigations with numbersChapter 2: Working with numbersChapter 3: CalculationsChapter 4: Angles and trianglesChapter 5: Number puzzlesChapter 6: More about numbersChapter 7: FractionsChapter 8: Ratio and proportionChapter 9: Congruent and similar shapesChapter 10: DecimalsChapter 11: Fractions, decimals and percentagesChapter 12: Finding fractions of an amountChapter 13: PercentagesChapter 14: Negative numbersChapter 15: TransformationsChapter 16: FormulaeChapter 17: More fractionsChapter 18: Time and travelChapter 19: Line graphsChapter 20: 2D shapesChapter 21: Pie charts and tablesChapter 22: Perimeter and areaChapter 23: 3D shapesChapter 24: Averages

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After a career in the City of London as a commodity trader, Serena Alexander has taught Mathematics since 1987, originally in both maintained and independent senior schools. From 1999 she taught at St. Paul's School for Boys, where she was Head of Mathematics at their Preparatory School, Colet Court, before moving first to Newton Prep as Deputy Head and then to Devonshire House as Headmistress. She has run many Mathematics conferences for prep school teachers. She is now an ISI reporting Inspector and consultant, with a particular focus on mathematics. In her spare time, Serena is often to be found afloat, sailing on the south coast and overseas, as well as being engaged in race management and helping at major regattas such as Cowes Week.

• Chapter 1: Investigations with numbersChapter 2: Working with numbersChapter 3: CalculationsChapter 4: Angles and trianglesChapter 5: Number puzzlesChapter 6: More about numbersChapter 7: FractionsChapter 8: Ratio and proportionChapter 9: Congruent and similar shapesChapter 10: DecimalsChapter 11: Fractions, decimals and percentagesChapter 12: Finding fractions of an amountChapter 13: PercentagesChapter 14: Negative numbersChapter 15: TransformationsChapter 16: FormulaeChapter 17: More fractionsChapter 18: Time and travelChapter 19: Line graphsChapter 20: 2D shapesChapter 21: Pie charts and tablesChapter 22: Perimeter and areaChapter 23: 3D shapesChapter 24: Averages

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