Simple explanations, worked examples and practical learning for everyday life.
Choose one of the six categories below, or search for a particular lesson.
Percentages, ratios and everyday calculations
10 lessonsInterest, GST, discounts and prices
6 lessonsArea, length, volume and conversions
10 lessonsSpelling, grammar and word skills
10 lessonsPDFs, images, files and technology
10 lessonsUseful everyday knowledge and skills
10 lessonsLearn percentages, fractions, decimals and percentage calculations.
Everyday MathsUnderstand increases, decreases and percentage change.
Everyday MathsCompare and simplify quantities using ratios.
Money & FinanceUnderstand tax-inclusive and tax-exclusive prices.
Money & FinanceCalculate interest on the original principal.
Money & FinanceExplore compound growth and year-by-year balances.
Money & FinanceCalculate savings and sale prices.
Money & FinanceLearn the difference between margin and markup.
Money & FinanceCompare price per kilogram, litre or item.
MeasurementsUnderstand area, perimeter and their units.
Words & LanguageRecognise nouns, verbs, adjectives and adverbs in everyday sentences.
Words & LanguageBuild sentences that express one complete idea clearly.
Words & LanguageUse full stops, commas, apostrophes and quotation marks with confidence.
Words & LanguageTell apart words that sound alike or look similar.
Words & LanguageLearn practical ways to approach unfamiliar spellings.
Words & LanguageUnderstand how smaller word parts help explain meaning.
Words & LanguageChoose words by meaning, tone and context.
Words & LanguageSolve anagrams by grouping letters and checking patterns.
Words & LanguageExplore sound patterns and related word forms.
Words & LanguageCheck writing for clarity, accuracy and consistency.
Digital SkillsChoose suitable formats for documents, pictures and archives.
Digital SkillsUnderstand PDF pages, text, forms and scanned documents.
Digital SkillsUnderstand pixels, image size and printing clarity.
Digital SkillsCreate a naming and folder system that is easy to maintain.
Digital SkillsProtect important documents from accidental loss.
Digital SkillsUse safer sign-in habits and account protection.
Digital SkillsSpot suspicious emails, texts and login requests.
Digital SkillsUnderstand browser permissions, updates and download checks.
Digital SkillsPreserve content and formatting when exporting files.
Digital SkillsChoose safe links, access levels and expiry settings.
Practical SkillsRead millimetres, centimetres and inches accurately.
Practical SkillsEstimate wall area and the number of paint tins needed.
Practical SkillsUnderstand kWh, daily supply charges and estimated costs.
Practical SkillsOrganise income, regular bills and savings goals.
Practical SkillsCalculate tile quantities using area and a cutting allowance.
Practical SkillsInterpret rain chance, temperature, wind and warnings.
Practical SkillsCompare serving sizes, ingredients and nutrition panels.
Practical SkillsMake a practical shopping plan and reduce forgotten items.
Practical SkillsOrganise routine inspections and household tasks.
Practical SkillsEstimate real-world distances from a printed map.
Everyday MathsLearn numerators, denominators, equivalent fractions and simple fraction calculations.
Everyday MathsRead decimal place values, compare decimals and calculate with money and measurements.
Everyday MathsRound numbers, estimate calculations and check whether answers are reasonable.
Everyday MathsUnderstand multiplication, division, remainders and everyday problem solving.
Everyday MathsCalculate the mean and understand median, mode and range.
Everyday MathsRead bar charts, line graphs and tables without misinterpreting the scale.
Everyday MathsUse negative numbers with temperatures, money and number lines.
MeasurementsLearn to convert millimetres, centimetres, metres and kilometres.
MeasurementsConvert square centimetres, square metres and hectares correctly.
MeasurementsUnderstand litres, millilitres, cubic centimetres and cubic metres.
MeasurementsWork with grams, kilograms and tonnes in everyday measurements.
MeasurementsRead Celsius temperatures and convert to Fahrenheit.
MeasurementsCalculate travel speed, distance and duration using consistent units.
MeasurementsAdd and subtract durations and work with 12-hour and 24-hour clocks.
MeasurementsUse kitchen volume and mass measures accurately in recipes.
MeasurementsRead ruler marks, measuring jugs, weighing scales and graduated instruments.
Money & FinanceLearn principal, interest, loan terms and repayment comparisons before borrowing.
Money & FinancePlan realistic savings targets, contributions and emergency funds.
Money & FinanceUnderstand balances, repayments, interest-free periods and fees.
Money & FinanceSee how rising prices affect household budgets and the value of money.
Words & LanguageLearn topic sentences, supporting details and clear conclusions.
Words & LanguageChoose an appropriate tone for emails, letters and everyday messages.
Words & LanguageFind main ideas, supporting details and reasonable inferences.
Words & LanguageUnderstand sentence focus and choose the clearest voice.
Words & LanguageCondense longer information accurately without losing meaning.
Digital SkillsAttach files, check sizes and share documents securely.
Digital SkillsLearn cells, formulas, totals and simple data tables.
Digital SkillsSave time with common keyboard commands on computers.
Digital SkillsUnderstand syncing, access and storage limits.
Digital SkillsMake documents and web content easier to read and use.
Practical SkillsBuild a realistic schedule for work, study and household tasks.
Practical SkillsFollow labels, symbols and manuals before using equipment.
Practical SkillsPlan balanced meals, ingredients and preparation time.
Practical SkillsKeep household records easy to find and appropriately protected.
Practical SkillsEstimate materials, quantities, waste and contingency.
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CS17 brings together clear educational articles, practical calculations and worked examples. Start with a category, follow a lesson at your own pace, and use related CS17 tools to explore the topic further.
We are expanding the collection in stages. Lessons are reviewed and added as they are completed, rather than publishing unfinished material.