OCR GCSE Computer Science J277: 1.1.2 CPU Performance | Full Lesson

Save hours of planning with this “Ready to Teach” professional lesson for GCSE students

This is a comprehensive, high-impact lesson covering 1.1.2 Factors Affecting CPU Performance for the OCR J277 specification. Designed to tackle one of the more technical areas of the course, this resource breaks down complex concepts into manageable, student-friendly “learning bites.”

Cognitive Science at its Core:

Retrieval Practice: Integrated “Do Now” starter to strengthen long-term memory and recall of LP1 (Architecture).

Dual Coding: Professional diagrams used to explain Cache levels and Parallel Processing.

Scaffolded Learning: Phased input-activity-review cycles to prevent cognitive overload.

What’s Included in this 25+ Slide Deck?

Factor 1: Clock Speed – Detailed breakdown of Hertz (GHz), instructions per second, and the risks of Overclocking.

Factor 2: Cache Size – Examination of L1, L2, and L3 cache, proximity vs. speed, and cost trade-offs.

Factor 3: Multiple Cores – Analysis of parallel processing, multi-tasking, and software limitations.

Progress Checks: Mini-quizzes interspersed throughout the lesson to check for understanding.

Main Activity: “The Tech Spec Challenge” – A justification task where students must apply their knowledge to real-world scenarios.

Plenary: A “3-2-1 Exit Ticket” to consolidate learning and identify gaps.

Exam Practice: Spec-aligned exam questions with integrated mark schemes for immediate feedback.

Key Features:

No Prep Required: Simply download and teach.

OCR J277 Aligned: Every slide matches the latest specification requirements.

Modern Aesthetic: A sleek, high-contrast dark theme that keeps students focused and looks professional.

Deep-dive content ensuring the full hour is covered with extension opportunities.