User:Elina Real Teaching lesson plan 1

Subject: Computer Science

Class: 8

Unit:12

Topic: Number system and its types

Time:45 min

No of students: 64

Period: 7th

School: Adarsha Secondary School

Specific Objectives:

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

• Undersanding the concepts of number system
• Explain the binary and decimal number system
• Convert between decimal to binary number system

Teaching Materials:

• Marker, dustor and Whiteboard;
• Laptop and projector.

Introduction:

• Start by asking a questoions about previous knowledge of Number system;
• Encourage them to share their thought;
• Introduce the number system:
• Number system is a technique to represent and work with numbers is called number system.
• Decimal number system is the most common number system.
• Other popular number systems include binary number system, octal number system, hexadecimal number system, etc.

Types:

Types of number system

1. Binary Number system
2. Decimal number system
3. Octal number system
4. Hexadecimal number system

Binary Number System

• A Binary number system has only two digits that are 0 and 1.
• Every number (value) represents with 0 and 1 in this number system.
• The base of binary number system is 2, because it has only two digits.
• These number represent two logical conditions:TRUE and FALSE.

  

  Binary to decimal conversion

Decimal number system:

• Decimal number system has only ten (10) digits from 0 to 9.
• Every number (value) represents with 0,1,2,3,4,5,6, 7,8 and 9 in this number system.
• The base of decimal number system is 10, because it has only 10 digits.

Binary to decimal conversion

• Discuss the process of converting Binary to decimal
• show and practice the some examples:

Example No 1:

Example No 2:

Decimal to Binary Conversion:

• Discuss the process of converting Decimal to binary
• Introduce methods like division by 2 and remainders.
• Show and practice the some examples:

Example 1:

Example 2:

Class-room activity:

• Assign a class-work for students:

Task 1:Convert 1110 into a decimal

Task 2:Convert (17)10 as a binary number

Task 3:Convert (225)10 into a binary

Task 4:Convert 1001 into decimal

• Walk around to assist students and answer and questions.

Conclusion:

• Summarize a key points(Number system , Binary number and decimal number)
• Encourage the students to ask the questions

Assessment:

• Define Number system and its type.

• Convert the following binary number in decimal equivalents:

1. 00111
2. 01011

• Convert the following decimal number in binary equivalents:

1. (158)10
2. (260)10