Edexcel IAL Computer Science – Topic 21 Algorithms – Bundle (4 lessons)

A complete, ready-to-teach bundle for Pearson Edexcel International A Level Computer Science (2026): Topic 21 Algorithms, 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

• U4.17 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.