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Geometry — Module 4: Pythagoras’ theorem
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What you'll learn
- Geometry & Measures
- Pythagoras' theorem AQA GCSE 8300 §3.4 / G20
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 Geometry — Module 4: Pythagoras’ theorem
This parent guide links the page examples with a practical study routine. The present resource is labelled Mathematics, GCSE, Year 10, Year 11, E-Learning Module. Use that context, the learning summary and published prompts to agree what secure work should reveal.
Prepare a focused session
Read the title and learning focus together. Ask the learner to predict the understanding, language or technique they may need. Scan each sample and spot action words, amounts, clues, limits or new terms. Agree a realistic time window, clear diversions and collect useful tools such as paper, pencil, ruler, coloured pens, calculator, headphones or a device. Encourage an unaided initial attempt so the response shows secure understanding and doubt. A quiet pause often strengthens retrieval better than an instant answer.
Make thinking published
Invite the learner to summarise the task in their own words. They can underline essential information, break a larger problem into smaller steps, draw a demonstrate, arrange details, practise a sentence or describe a planned method. Ask why their method fits and whether another strategy could work. When progress stops, offer a carefully scaled hint: state again the goal, point towards a useful example, limit the choice, then demonstrate only the next step. Return ownership immediately afterwards. Spoken reasoning exposes mistakes and practises accurate subject language.
Check accuracy and understanding
Compare the attempt with published answer guidance after honest effort. Inspect more than the final response: review the method, explanation, units, details, sequence, spelling or presentation where useful. Ask the learner to identify the initial point where their reasoning changed direction. Complete corrections actively in a different colour or separate space, followed by a brief note of the change. For a correct answer, request support and one unaided check. This separates assured 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 central 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 reviewing terminology, rehearsing a calculation, adding details or refining clarity. Recheck that target later in the week because spaced review gives better information than instant repetition.
The interactive player, downloadable file and record answer material retain their existing access controls. The guide strengthens 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.
A right-angled triangle has shorter sides 3 cm and 4 cm. Find the hypotenuse.
- 5 cm
- 6 cm
- 7 cm
- 12 cm
Sample answer: 5 cm
Explanation: √(3² + 4²) = √25 = 5 cm.
A right-angled triangle has shorter sides 6 cm and 8 cm. Find the hypotenuse.
- 10 cm
- 12 cm
- 14 cm
- 48 cm
Sample answer: 10 cm
Explanation: √(6² + 8²) = √100 = 10 cm.
A right-angled triangle has shorter sides 5 cm and 12 cm. Find the hypotenuse.
- 13 cm
- 15 cm
- 17 cm
- 60 cm
Sample answer: 13 cm
Explanation: √(5² + 12²) = √169 = 13 cm.
A right-angled triangle has hypotenuse 13 cm and one shorter side 5 cm. Find the other side.
- 8 cm
- 10 cm
- 12 cm
- 18 cm
Sample answer: 12 cm
Explanation: √(13² − 5²) = √144 = 12 cm.
A right-angled triangle has shorter sides 8 cm and 15 cm. Find the hypotenuse.
- 17 cm
- 19 cm
- 23 cm
- 120 cm
Sample answer: 17 cm
Explanation: √(8² + 15²) = √289 = 17 cm.