IGCSE / O LEVELS MATH LESSON PLAN 1.4 – Fractions, Decimals and Percentages

Lesson 1: Fractions and Decimals

SectionDetails
ObjectiveUse the language and notation of proper fractions, improper fractions, mixed numbers, and decimals; recognise equivalence and convert between forms.
Activities– Starter (5 mins): Quick warm-up converting improper fractions to mixed numbers. – Main (30 mins): Explain simplifying fractions, converting fractions ↔ decimals. Include recurring decimals notation (e.g., 0.1̅7 = 17/99). – Plenary (5 mins): Students complete a quick matching activity (fractions vs decimals).
ResourcesWorksheets, decimal chart, calculator.
Time40 minutes: 5 (Starter) + 30 (Main) + 5 (Plenary).
HomeworkConvert 10 fractions to decimals and 10 decimals to fractions.
AssessmentWorksheet: simplify and convert between fractions/decimals.
Past Paper Practice“Write 0.1̅7 as a fraction.”

Lesson 2: Percentages and Conversions

SectionDetails
ObjectiveUnderstand percentages; convert between fractions, decimals, and percentages.
Activities– Starter (5 mins): Students estimate 25%, 50%, 75% of simple quantities. – Main (30 mins): Teach equivalences (½ = 0.5 = 50%). Practice converting across forms. Apply to practical examples (discounts, marks). – Plenary (5 mins): Quick-fire conversions game.
ResourcesPowerPoint slides, conversion charts, worksheets.
Time40 minutes: 5 (Starter) + 30 (Main) + 5 (Plenary).
HomeworkConvert given percentages into fractions and decimals (e.g., 12.5%, 37.5%, 66⅔%).
AssessmentWorksheet: mixed conversions.
Past Paper Practice“Express 72 as a percentage of 90.”
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