User:Elina Real Teaching Lesson Plan 2

Subject: Computer Science                                                           Unit:12

Class: 8                                                                        Topic:Octal and Hexadecimal number system

Time:45 min                                                                      Period: 7th

No of students:64                                                             School:Adarsha Secondary school

Specific Objectives:

At the end of this class,Student will be able to:

• Understand the concept of octal and hexadecimal number system;
• Understand the steps of converting octal into hexadecimal and hexadecimal into octal number system;
• solve the conversion between hexadecimal into octal and octal into hexadecimal number system.

Teaching Material:

• white board, dustor and marker;
• Laptop and Projector.

Introduction:

• Begin by asking a question about Octal and hexadecimal number system.
• Encourage them to share their thought.
• Explain the steps of converting octal into hexadecimal and hexadecimal into octal number system.

Types:

1. Binary Number System
2. Decimal Number Systen
3. Octal Number System
4. Hexadecimal Number System

   

   Number system conversion table from 1 to 15

Octal Number System:

• Octal number system has only eight digit from 0 to 7.
• Every number (value) represents with 0,1,2,3,4,5,,6,7 in the number system.
• The base of octal number system is 8 ,because it has only 8 digits.

Hexadecimal Number System:

• Hexadecimal number system has 16 alphanumeric value from 0 to 9 and A to F.
• Every number (value) represents with 0,1,2,3,4,5,6,7,8,9,,A,B,C,D,E and F in this number system.
• The base of hexadecimal number system is 16, because it has 16 alphanumeric value.
• Here A is 10 , B is 11, C is 12 , D is 13 ,E is 14 and F is 15.

Octal to decimal conversion:

• Explain the process of converting an octal number to its binary equivalent using a step-by-step method.
• write a each step of conversion process in whiteboard and provides basic example.

1.Example:

2.Example:

Hexadecimal to octal Conversion:

• Explain how to convert a hexadecimal number to its binary equivalent and then to octal.
• Work through examples and problems on the board, students should involve in this process.

Example number 1:

Example number 2

Class room activity:

• Assign a task an Allow students to work individually or in pairs to solve these problems.

Task 1:Convert (A5B)16 into octal number.

Task 2:Convert (654)8 into hexadecimal number.

Task 3:Convert (360) into binary number.

• Encourage to the student to ask the question if they have any problem in any step.

Conclusion:

• Summarize a key points about today topics;
• Encourage a student to ask a questions;

Assessment:

• Convert the following number according to the given instruction:

1. (240)10 into octal number
2. (540)8 into hexadecimal number
3. (ABC)16 into octal number
4. (1BC)16 into octal number