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- Ratio & proportion — Module 3: Direct & inverse proportion
Ratio & proportion — Module 3: Direct & inverse proportion
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What you'll learn
- Direct & inverse proportion AQA GCSE 8300 §3.3 / R10, R13
- Ratio, Proportion & Rates of Change
Inside this resource
- 4 slides
For the student — how to do this
For parents and carers
For teachers and tutors
How to check the work
Ask the learner to show or explain one idea, then try a fresh example with suitable support. Note any prompts needed; retelling alone does not show secure understanding.
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How to study with Ratio & proportion — Module 3: Direct & inverse proportion
This parent guide connects the page examples with a practical study routine. The current resource is labelled Mathematics, GCSE, Year 10, Year 11, E-Learning Module. Use that setting, the learning summary and published prompts to agree what firm work should reveal.
Prepare a focused session
Read the title and learning focus side by side. Ask the learner to predict the understanding, vocabulary or method they may need. Scan each sample and spot instruction words, values, hints, conditions or unfamiliar terms. Agree a manageable time window, remove diversions and prepare suitable equipment such as paper, pencil, ruler, coloured pens, calculator, headphones or a device. Encourage an self-directed initial attempt so the work indicates firm understanding and uncertainty. A reflective pause often supports retrieval better than an immediate answer.
Make thinking visible
Invite the learner to restate the task in their own words. They can underline essential information, divide a complex problem into smaller steps, sketch a show, arrange support, rehearse a sentence or describe a planned method. Ask why their route fits and whether another method could work. When work stops, provide a staged hint: rephrase the goal, point towards a useful example, narrow the choice, then show only the next step. Return ownership directly afterwards. Spoken reasoning reveals confusions and practises precise subject language.
Check accuracy and understanding
Compare the attempt with visible answer guidance after honest effort. Inspect more than the final work: review the method, explanation, units, support, sequence, spelling or presentation where useful. Ask the learner to locate the initial point where their reasoning changed course. Complete corrections actively in a different colour or separate space, followed by a short note of the correction. For a correct answer, request support and one self-directed check. This separates confident understanding from guessing while strengthening accuracy, reflection and careful working habits.
Consolidate and extend
Finish with retrieval from memory. Cover the example and ask for the main idea, process or fact again. Create one small alternative by changing a value, condition, example, viewpoint or level of support while keeping the learning focus. Invite the learner to write a related question and supply checking guidance. Record one success and one precise next step, perhaps returning to terminology, practising a calculation, adding support or developing clarity. Recheck that target again in the week because spaced review gives stronger information than immediate repetition.
The interactive player, downloadable file and complete answer material retain their existing access controls. The guide supports preparation, discussion and review.
Sample questions and answers
Try five questions from this exact activity. Review each authored answer and explanation, then note which ideas need another look. Compare the options and explain why the answer fits. Say the reasoning aloud or write a short justification before opening the interactive player to complete the activity and save progress.
3 pens cost £1.50. How much do 5 pens cost?
- £2.00
- £2.50
- £3.00
- £4.50
Sample answer: £2.50
Explanation: 1 pen costs 50p, so 5 pens cost £2.50.
4 apples cost 80p. How much do 6 apples cost?
- £1.00
- £1.20
- £1.40
- £1.60
Sample answer: £1.20
Explanation: 1 apple costs 20p, so 6 cost £1.20.
2 kg of potatoes cost £1.60. How much do 5 kg cost?
- £3.20
- £4.00
- £4.80
- £8.00
Sample answer: £4.00
Explanation: 1 kg costs 80p, so 5 kg cost £4.00.
A car travels 90 miles on 3 gallons. How far on 5 gallons?
- 120 miles
- 150 miles
- 180 miles
- 270 miles
Sample answer: 150 miles
Explanation: 30 miles per gallon, so 5 gallons → 150 miles.
5 workers build a wall in 12 days. How long would 10 workers take?
- 3 days
- 6 days
- 10 days
- 24 days
Sample answer: 6 days
Explanation: Inverse proportion: twice the workers, half the time = 6 days.