Module 3: Computer Studies
Number systems and data representation.
Use this workbook to practice core KCSE communication skills and record evidence of progress.
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SECTION: COMPUTER STUDIES
MODULE: 3
Part A: Units
1. Data representation
a. Number systems
b. Binary system
c. Data representation in computers
d. Conversion between number systems
Part B: Project
Practice number system conversions and data representation.
Project Title: Number Systems in Practice
Objective: Convert between number systems and explain data representation in computers.
Project Instructions:
- 1. Convert five decimal numbers to binary.
- 2. Convert three binary numbers back to decimal.
- 3. Explain how characters are represented using codes (ASCII or Unicode).
- 4. Show one real-life use of binary in computing.
- 5. Consult your coach where necessary.
Evidence to Submit:
- • Conversion table for decimal and binary.
- • Short explanation of character representation.
- • One example of binary use.
Submission
Part C: Training Others
Teach a peer about binary and number systems.
Guidance:
- • Explain why computers use binary.
- • Demonstrate one conversion step by step.
- • Ask the learner to convert a number.
Reflection:
- • What did the learner understand well?
- • What needed more practice?
- • What support do you need from your coach?
Submission
Part D: Assessment
Competency Levels:
1 = Expectations not met
2 = Partially met
3 = Satisfactorily met
4 = Excellently met
Self-assessment:
- • Number systems basics:
- • Binary conversion accuracy:
- • Data representation understanding:
Coach assessment:
- • Number systems basics:
- • Binary conversion accuracy:
- • Data representation understanding:
Submission
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