- Home
- Learn
- GCSE
- Mathematics
- Growth, decay & compound interest
- Higher Maths 2 — Module 4: Growth, decay & compound interest
Higher Maths 2 — Module 4: Growth, decay & compound interest
Upgrade to access this resourceAvailable with Paid subscription.View plans
Complete these first
This module unlocks once you have completed:
📖 More information Tap to read
What you'll learn
- Growth, decay & compound interest AQA GCSE 8300 §3.1 / N13, R16
- 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.
Sign up free →
Prefer not to join? Buy just this resource
One-off price: £1.29
This resource is also included with eligible paid plans.
Buy this resource — £1.29Create a free Learning Locker first; the exact resource and price are confirmed before payment.
How to study with Higher Maths 2 — Module 4: Growth, decay & compound interest
This parent guide relates the page examples with a practical study routine. The listed resource is labelled Mathematics, GCSE, Year 10, Year 11, E-Learning Module. Use that context, the learning summary and published prompts to clarify what successful work should reveal.
Prepare a focused session
Read the title and learning focus together. Ask the learner to predict the understanding, language or plan they may need. Scan each sample and recognise action words, values, signals, limits or less familiar terms. Agree a manageable time window, remove interruptions and prepare appropriate tools such as paper, pencil, ruler, coloured pens, calculator, headphones or a device. Encourage an self-directed first attempt so the response shows sound understanding and doubt. A reflective pause often supports remembering better than an same-session answer.
Make thinking published
Invite the learner to describe the task in their own words. They can underline necessary information, separate a complex problem into shorter steps, sketch a representation, sort support, rehearse a sentence or describe a planned method. Ask why their route fits and whether another plan could work. When progress stops, give a staged hint: state again the goal, point towards a useful example, reduce the choice, then show only the next step. Return control immediately afterwards. Spoken reasoning highlights confusions and practises precise subject language.
Check accuracy and understanding
Compare the attempt with published answer guidance after genuine effort. Inspect more than the final response: review the method, explanation, units, support, sequence, spelling or presentation where useful. Ask the learner to identify the first point where their reasoning changed course. Complete corrections actively in a different colour or fresh space, followed by a short note of the correction. For a correct answer, request justification and one self-directed check. This distinguishes confident understanding from guessing while developing accuracy, reflection and careful working habits.
Consolidate and extend
Finish with retrieval from memory. Cover the example and ask for the core idea, process or fact again. Create one small variation by altering 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 reviewing terminology, repeating a calculation, adding support or improving clarity. Recheck that target again in the week because spaced review gives stronger information than same-session repetition.
The interactive player, downloadable file and make 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.
£100 grows by 10% in one year. What is the new amount?
- £90
- £101
- £110
- £200
Sample answer: £110
Explanation: 100 × 1.1 = £110.
What is the multiplier for a 20% increase?
- 0.2
- 1.2
- 2.0
- 0.8
Sample answer: 1.2
Explanation: 100% + 20% = 120% = 1.2.
What is the multiplier for a 15% decrease?
- 0.15
- 0.85
- 1.15
- 1.5
Sample answer: 0.85
Explanation: 100% − 15% = 85% = 0.85.
For 10% compound interest over 2 years, the multiplier is 1.1². What is 1.1² ?
- 1.1
- 1.20
- 1.21
- 2.1
Sample answer: 1.21
Explanation: 1.1 × 1.1 = 1.21.
Work out £200 × 1.1².
- £220
- £240
- £242
- £262
Sample answer: £242
Explanation: £200 × 1.21 = £242.