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map, filter, reduce, comprehensions, zip – Edexcel IAL CS lesson

map, filter, reduce, comprehensions, zip – Edexcel IAL CS lesson

Subject: Computing

Age range: 16+

Resource type: Lesson (complete)

Last updated

10 November 2026

pptx, 491.84 KB
pptx, 491.84 KB
docx, 38.59 KB
docx, 38.59 KB
docx, 39.87 KB
docx, 39.87 KB

map, filter, reduce, comprehensions, zip lesson for Pearson Edexcel International A Level Computer Science, with editable PowerPoint slides, a student worksheet and full answers. Students use Python’s map, filter, reduce, zip and comprehensions to transform and combine collections without writing long loops.

Written for Unit 4 Advanced Practical Programming, topic 20 Additional programming paradigms (specification 20.1.2 i, 20.1.2 j, 20.1.2 k, 20.1.2 l, 20.1.2 m, 20.1.2 n). Everything is editable, so you can adapt it to your class.

What’s included
  • PowerPoint lesson (16 slides) with teacher notes on every slide
  • Student worksheet (Word), ready to print or edit
  • Answer sheet (Word) with mark-scheme style answers for every question
U4.16 map, filter, reduce, comprehensions, zip

By the end of the lesson students can:

  • Transform, select and combine data with map, filter and functools.reduce
  • Write list and dictionary comprehensions, with and without a condition
  • Pair up items from several lists with zip

Worksheet sections: A. Match the tool; B. Predict the output; C. Rewrite the loops; D. Exam-style questions; E. Challenge

Every lesson includes
  • Learning goals and a starter question
  • Clear explanations, diagrams and worked examples (Python 3 throughout, as the specification requires)
  • A quick check and a “your turn” task linked to the worksheet
  • Exam-style questions with marks, and an exit ticket
Format
  • PowerPoint (.pptx) and Word (.docx), fully editable
  • Works in PowerPoint and Google Slides
  • Calm, muted sixth-form design, consistent across the whole course

These are independent resources written for the Pearson Edexcel International Advanced Level Computer Science specification (Issue 1, first teaching 2026; IAS XCP01, IAL YCP01). They are not produced or endorsed by Pearson.

More lessons in this series

Last updated: November 2026.

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A bundle is a package of resources grouped together to teach a particular topic, or a series of lessons, in one place.

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Unit 4 Advanced Programming – Edexcel IAL CS (20 lessons)

20 ready-to-teach lessons for Pearson Edexcel International A Level Computer Science: Advanced Practical Programming. Every lesson has editable PowerPoint slides, a student worksheet and full answers, and the bundle costs less than buying the lessons one by one. A complete, ready-to-teach bundle for Pearson Edexcel International A Level Computer Science (2026): Unit 4 Advanced Practical Programming, in 20 bespoke lessons. Every lesson comes with: - **Editable PowerPoint slides**: goals, starter, explanations, diagrams, worked examples, a quick check, a task and an exit ticket, with teacher notes - **Student worksheet (Word)**: recall, applied practice and exam-style questions with marks - **Answer sheet (Word)**: full mark-scheme style answers Worth £99.80 if bought lesson by lesson. ## What's inside **Topic 17 Programming** - U4.01 Tools, libraries and modules **Topic 18 Representing and handling data** - U4.02 Floating-point data and decimal - U4.03 Regular expressions - U4.04 NumPy arrays - U4.05 Data analysis with pandas - U4.06 A circular queue in code - U4.07 A linked list in code - U4.08 Hash tables and collisions in code - U4.09 Graphs in code - U4.10 Binary search trees in code - U4.11 Recursive tree traversals **Topic 19 Best practice** - U4.12 Best practice on larger problems **Topic 20 Additional programming paradigms** - U4.13 Classes, objects and encapsulation - U4.14 Aggregation, composition and inheritance - U4.15 Pure, first-class and lambda functions - U4.16 map, filter, reduce, comprehensions, zip **Topic 21 Algorithms** - U4.17 Merge sort in code - U4.18 Quick sort in code - U4.19 Dijkstra's algorithm in code - U4.20 Run-length encoding ## Why teachers use it - Mapped lesson by lesson to the specification, so coverage is easy to track - Python 3 throughout, as the specification requires - Fully editable: adapt to your class, timings and school template - Works for teaching, revision, cover lessons and homework These are independent resources written for the Pearson Edexcel International Advanced Level Computer Science specification (Issue 1, first teaching 2026; IAS XCP01, IAL YCP01). They are not produced or endorsed by Pearson. Last updated: November 2026.

£38.99
Bundle

Additional programming paradigms – Edexcel IAL CS (4 lessons)

4 ready-to-teach lessons for Pearson Edexcel International A Level Computer Science: Additional programming paradigms. Every lesson has editable PowerPoint slides, a student worksheet and full answers, and the bundle costs less than buying the lessons one by one. A complete, ready-to-teach bundle for Pearson Edexcel International A Level Computer Science (2026): Topic 20 Additional programming paradigms, in 4 bespoke lessons. Every lesson comes with: - **Editable PowerPoint slides**: goals, starter, explanations, diagrams, worked examples, a quick check, a task and an exit ticket, with teacher notes - **Student worksheet (Word)**: recall, applied practice and exam-style questions with marks - **Answer sheet (Word)**: full mark-scheme style answers Worth £19.96 if bought lesson by lesson. ## What's inside - **U4.13** Classes, objects and encapsulation - **U4.14** Aggregation, composition and inheritance - **U4.15** Pure, first-class and lambda functions - **U4.16** map, filter, reduce, comprehensions, zip ## Why teachers use it - Mapped lesson by lesson to the specification, so coverage is easy to track - Python 3 throughout, as the specification requires - Fully editable: adapt to your class, timings and school template - Works for teaching, revision, cover lessons and homework These are independent resources written for the Pearson Edexcel International Advanced Level Computer Science specification (Issue 1, first teaching 2026; IAS XCP01, IAL YCP01). They are not produced or endorsed by Pearson. Last updated: November 2026.

£8.99

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