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Computer Science - 3rd

Exploring the World of Computers

Title: Exploring the World of Computers

Compliance: Common Core State Standards for Mathematics and English Language Arts

Subject: Computer Science

Summary: Engage your third-grade students in a hands-on activity that introduces them to the world of computers and coding.

Topic: Introduction to Computers and Coding

Learning Outcomes:

  • Know the basic components of a computer system
  • Understand the concept of coding and its importance
  • Can create simple programs using block-based coding


This activity will be conducted in a group setting, allowing students to collaborate and learn from each other. It will involve a combination of hands-on exploration, discussions, and interactive coding exercises.


  • Computers or tablets with internet access
  • Scratch Jr. or similar block-based coding software
  • Printed worksheets and activity sheets
  • Markers, crayons, and colored pencils


Step 1: Introduction to Computers

Begin the activity by discussing the basic components of a computer system, such as the monitor, keyboard, mouse, and CPU. Show examples of each component and explain their functions.

Step 2: Importance of Coding

Engage the students in a discussion about coding and its importance in today's world. Explain how coding is used to create computer programs and apps.

Step 3: Exploring Block-Based Coding

Introduce the students to block-based coding using Scratch Jr. or a similar software. Demonstrate how to drag and connect blocks to create simple programs.

Step 4: Hands-On Coding Activity

Provide each student with a printed worksheet containing a simple coding challenge. Instruct them to use the block-based coding software to solve the challenge.

Step 5: Sharing and Reflection

Allow students to share their coded programs with the class. Encourage them to explain their thought process and any challenges they faced. Facilitate a discussion on the importance of problem-solving and perseverance in coding.


Assess the students' understanding and application of the concepts through the following:

  • Observation during the hands-on coding activity
  • Review of completed worksheets and activity sheets
  • Classroom discussions and participation

Provide feedback to students, highlighting their strengths and areas for improvement.

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6 months ago
Common Core State Standards for Mathematics and English Language Arts

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