Two editable PowerPoints covering defensive design and testing, with validation models, authentication scenarios, test plans, speaker notes and exam practice.
For school teaching, private tuition and guided home education.
Inside the actual packEditable .pptx
2
PowerPoints
49
Editable slides
1
Complete pack
Editable PowerPoints
2
Slides with speaker notes
49
Slides with animation
37
Knowledge organisers
2
A clear route through unit 2.3
2 editable PowerPoints. One complete unit.
Present, pause for practice, reveal and discuss. Adapt the pace and editable slides to your learners.
OCR 2.3.125 slides
Defensive design
Anticipate misuse, validate inputs and explain how authentication and maintainable code help make programs robust.
Input validation, validation checks and invalid data
Authentication and a worked login trace
Sub programs, naming, indentation and commenting
OCR 2.3.224 slides
Testing
Choose suitable test data, complete a test plan and use results to identify errors and refine a program.
Iterative and final testing, syntax and logic errors
Normal, boundary, invalid and erroneous test data
Test plans, algorithm refinement and exam practice
Specification placement: J277/02 Computational thinking, algorithms and programming → 2.3 Producing robust programs. Sections 2.3.1 Defensive design and 2.3.2 Testing. Check the official OCR specification.
Look before you choose
See the teaching, slide by slide.
Choose a PowerPoint and browse its cover and teaching sample. These 4 real previews show the actual teaching style and content.
Topic opening
Slide 1 of 25 · Preview 1 of 2
These are real slides from the pack. Website previews are still images; click-to-reveal answers and animations run in PowerPoint Slide Show mode.
Prepare with confidence
From visual explanations to exam practice.
Follow the worked explanations
Visual models and worked examples break each idea into steps that you can explain, pause and revisit.
Teach with guidance
Speaker notes on every slide support delivery. Route maps, vocabulary and misconception checks help you prepare.
Apply ideas and practise exam answers
Guided tasks lead into exam practice with answers. Each PowerPoint includes a knowledge organiser for review.
Keep the original editable files
The private ZIP includes every PowerPoint in this unit, a read-me file and a quick-start guide. Adapt the slides within your licence.
Present in PowerPoint Slide Show mode
Read the speaker notes before teaching. Use the route map on slide 2 to navigate, then follow the on-slide prompts for animations and answer reveals. Each topic can run across several sessions.
Every licence includes the complete unit 2.3 pack. Other OCR units are listed separately.
Before you purchase
Useful details
Does the price cover the complete unit?
Yes. The individual learner price of £24.99 / AED 125 covers the complete unit 2.3 pack: all 2 editable PowerPoints, 49 slides and the pack guide. Tutor and department prices also apply to the complete unit.
Which OCR paper and sections does this cover?
This pack belongs to OCR GCSE Computer Science J277, Component 02 / Paper 2: Computational thinking, algorithms and programming, unit 2.3 Producing robust programs. Sections 2.3.1 Defensive design and 2.3.2 Testing.
What exactly will I receive?
One private ZIP contains all 2 original editable .pptx files, a read-me file and a quick-start guide. There are 49 slides with speaker notes throughout, including 37 slides containing animation and 2 knowledge organisers.
Are the resources different for teachers, tutors and home educators?
The teaching content is the same. Choose Individual learner for one named student, Tutor / single teacher for one educator with their own students, or School / department for multiple educators in one school department. Price and sharing permissions depend on the licence. Every option includes the complete unit.
Can I use the pack for home education?
Yes, with a parent or tutor guiding the learning. Read the speaker notes, let the learner attempt each task before revealing the answer and use the knowledge organiser to revisit key ideas. Spread a deck across sessions and pair programming explanations with practical coding where appropriate.
Which software should I use?
Use Microsoft PowerPoint in Slide Show mode for the intended animation, answer reveals and route-map links. Follow the click or space-bar prompts on each slide and click marked cards for their answers. Other presentation viewers may change the layout or interactions. Editing view can expose answers.
How should I work through this unit?
Teach how a program anticipates misuse and handles input, then explain how testing finds faults and guides refinement. Ask learners to justify validation checks and test data for the scenario.
How do I get access after purchase?
Choose your licence and send the pre-filled enquiry. We confirm the price, permitted use and payment details before payment. After payment is confirmed, we arrange private access to the complete teaching files and pack guide.
LogicPath Education is an independent resource provider and is not endorsed by or affiliated with OCR. The public samples are images from the supplied PowerPoints; the complete teaching files are delivered privately.