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Cambridge IGCSE

Find out who understands it before the exam.

Prepare original practice around the topic you are teaching. Ask for explanations, explore misconceptions and refine the support before learners try independently.

Investigate a quadratic: graph and featuresAges 14 to 16

Start with the thinking you need.

Preview a worksheet, try the task and choose what pupils will explain.

Investigate a quadratic: graph and featuresAges 14 to 16 · English PDF
Page 1 of 2

Explain a graph.

Connect y = x² − 2x − 3 with a table, plotted points, roots and a minimum. Use the next source page for independent practice.

Follow the thinking
CalculatePlotJustify

Leave something for pupils to explain.

Investigate y = x² + 2x − 8 and justify how its forms reveal graph features.

Try the teaching idea, then explore the full activity.

Resources for your lessons

Practise quadratic algebra and short-text analysis. Choose for your subject, teaching stage and examination year.

Prepare it for your class.

Tell PLAI what your class is learning and what they already know. Review the draft before sharing it.

  • Confirm the class and prior learning.
  • Check the worksheet and the curriculum your class follows.
  • Keep an independent response for pupils.

Investigate a quadratic: graph and features

Open PLAI™

Copy your brief into PLAI™, then review the draft for your class.

Questions about using PLAI™ for IGCSE teaching

Are these official Cambridge examination questions?
No. These prompts are for original classroom practice. Use official Cambridge materials for examination requirements and check generated resources against your syllabus.
Do I need to include a syllabus code every time?
Use the code and examination year when you need precise syllabus alignment. Once the course context is clear in the conversation, keep follow-up requests focused on the task.
Which subjects can I use this for?
Use an example to explore the task structure, or bring a topic from your own subject. Check the subject content, syllabus version and examination year before using a new task.
Can I treat the answer guidance as a mark scheme?
Review it as draft teaching guidance, not an official mark scheme. Check its accuracy and the demands of the question before using it with learners.

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