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Computer Science - 3rd

Introduction to Computer Science

In this lesson, we will explore the exciting world of computer science! We will learn about the basics of computers, how they work, and how they can be used to solve problems. By the end of this lesson, students will have a better understanding of the role of computers in our lives and the fundamentals of computer science.

Learning Outcomes:

  • Know the basic components of a computer
  • Understand how computers process information
  • Can do simple problem-solving using computers


This lesson will be delivered through a combination of interactive discussions, hands-on activities, and multimedia presentations. Students will have the opportunity to explore and experiment with computers to reinforce their understanding of the concepts.


  • Computers or laptops
  • Internet access
  • Whiteboard or blackboard
  • Markers or chalk
  • Printed worksheets


1. Begin the lesson by asking students what they know about computers. Write their responses on the board.

2. Introduce the concept of computer science and explain that it is the study of computers and how they work.

3. Discuss the basic components of a computer, such as the monitor, keyboard, mouse, and CPU. Show visual aids or real examples of these components.

4. Explain how computers process information using the input-process-output model. Use examples to illustrate this concept, such as typing a sentence on a keyboard and seeing it appear on the screen.

5. Engage students in a hands-on activity where they can explore the different parts of a computer. Allow them to take apart a computer (under supervision) and identify the components.

6. Introduce the concept of problem-solving using computers. Explain that computers can be programmed to perform specific tasks and solve problems.

7. Provide examples of simple problems and ask students to think about how they would solve them using a computer. Encourage creative thinking and discussion.

8. Divide students into pairs or small groups and distribute printed worksheets with simple problems to solve using computers. Allow them to use computers or laptops to find solutions.

9. After completing the activity, reconvene as a class and discuss the solutions. Encourage students to explain their thought processes and share their findings.


To assess students' understanding, assign a short written reflection where they can explain what they have learned about computers and computer science. Additionally, observe their participation during the hands-on activity and their ability to solve problems using computers.

By the end of this lesson, students should have a solid foundation in computer science and a better understanding of how computers work and can be used to solve problems.

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7 months ago
Common Core State Standards for Computer Science

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