Debugging Jss 2 Lesson Plan

LESSON PLAN

DIGITAL TECHNOLOGIES

Subject:	Digital Technologies
Class:	JSS 2
Term:	Second Term
Week:	10
Topic:	Debugging
Duration:	80 Minutes (Double Period)
Date/Period:	________________________

Learning Objectives

By the end of the lesson, students should be able to:

1. Define debugging and explain its importance in programming.
2. Identify syntax errors, logic errors and runtime errors.
3. Describe the steps involved in debugging a program.
4. Identify common errors in Scratch programs.
5. Correct simple programming errors and test the program again.

Previous Knowledge

Students have learnt about variables, conditions, loops and game development using visual programming. They can create simple Scratch programs using connected programming blocks.

Instructional Materials

• Computer system or laptop.
• Scratch programming environment.
• Projector or display screen, where available.
• Charts showing common programming errors.
• Whiteboard and markers.

Reference Materials

• Digital Technologies lesson note: Debugging.
• Scratch programming environment and learning resources.
• Teacher-prepared examples and practical exercises.

Presentation

Stage/Time	Teacher's Activities	Students' Activities
Stage 1 Introduction 5 minutes	Demonstrates or describes a Scratch program that fails to move a sprite. Asks students to suggest possible reasons for the problem.	Observe the problem and suggest possible causes of the program's incorrect behaviour.
Stage 2 Meaning and Importance 10 minutes	Defines debugging and explains how it helps programmers find and correct errors, improve accuracy and make programs more reliable.	Take notes, define debugging and state reasons why debugging is important.
Stage 3 Types of Errors 15 minutes	Explains syntax errors, logic errors and runtime errors. Gives examples and distinguishes errors in instructions from errors that occur during program execution.	Identify each type of error and classify examples provided by the teacher.
Stage 4 Debugging Steps 10 minutes	Explains how to identify a problem, reproduce the error, inspect the instructions, correct the error and test the program again.	Arrange the debugging steps in the correct order and explain why retesting is necessary.
Stage 5 Practical Activity 30 minutes	Guides students to debug a Scratch movement program by reconnecting a disconnected block. Introduces a score error in which the score decreases instead of increasing, and guides students to correct the instruction.	Inspect the programs, identify the incorrect instructions, make corrections and run the programs again to confirm that they work as intended.
Stage 6 Evaluation and Conclusion 10 minutes	Asks oral questions, corrects misconceptions and summarises the meaning, types and steps of debugging.	Answer questions, distinguish between error types and explain how they corrected a program during the practical activity.

Evaluation

1. Define debugging.
2. State three reasons debugging is important.
3. Explain the difference between syntax errors and logic errors.
4. What is a runtime error?
5. List four steps involved in debugging.
6. How would you correct a Scratch program whose sprite does not move?
7. Why should a program be tested after correcting an error?

Assignment

1. Define debugging and explain its importance.
2. Describe three types of programming errors and give one example of each.
3. List six steps involved in debugging a computer program.
4. Explain how to correct a program that decreases a player's score instead of increasing it.
5. State five good practices programmers should follow when debugging.

Teacher's Reflection/Remarks

Were students able to identify common programming errors, correct faulty Scratch instructions and test their corrections? Record any difficulties encountered and provide additional practical exercises where necessary.

Remarks: __________________________________________________

Teacher's Signature: ____________________   Date: __________