User:Niraj/Teaching-8

Teaching lesson plan 8 Subject: Python programming

Date: 23 Jan 2024

Time: 60 minutes

Period: 3rd

Teaching Item: Python user defined functions

Class: Bachelor

Objective: By the end of this lesson, students will be able to:

1. Understand the concept of user-defined functions in Python.
2. Define and call user-defined functions with and without parameters.
3. Learn about the scope of variables inside and outside functions.
4. Practice creating and using user-defined functions in Python.

Materials Needed:

• Python interpreter or IDE
• Projector for demonstration

Introduction (5 minutes):

1. Begin by discussing the importance of functions in programming, such as promoting code reuse and organization.
2. Introduce the concept of user-defined functions as functions created by the programmer to perform specific tasks.
3. Explain that user-defined functions allow for modularizing code and improving readability and maintainability.

Defining and Calling Functions (15 minutes):

1. Explain the syntax of defining a function in Python using the def keyword followed by the function name and parameters (if any).
2. Discuss the importance of naming functions and choosing descriptive names.
3. Demonstrate how to define and call a simple function without parameters.
4. Show examples of defining functions with parameters and discuss the flexibility they provide.
5. Explain the concept of function return values and how they can be used to pass data back to the caller.

Scope of Variables (10 minutes):

1. Discuss the concept of variable scope and its importance in understanding how variables are accessed within functions.
2. Explain the difference between local and global variables and their scope inside and outside functions.
3. Demonstrate examples of accessing and modifying global variables from within functions, and discuss best practices for variable scope.

Practical Exercises (10 minutes):

1. Provide students with exercises to practice defining and calling user-defined functions.
2. Encourage them to create functions to perform specific tasks, such as calculating a factorial or finding the maximum value in a list.
3. Circulate around the classroom to provide assistance and guidance as needed.

Advanced Topics (5 minutes):

1. Introduce advanced topics related to user-defined functions, such as default arguments, variable-length argument lists (*args and **kwargs), and recursive functions.
2. Discuss how these features enhance the flexibility and power of user-defined functions in Python.

Conclusion (5 minutes):

1. Summarize the key points covered in the lesson: user-defined functions in Python.
2. Reiterate the importance of functions for code organization, reusability, and readability.
3. Encourage students to continue practicing and experimenting with user-defined functions to strengthen their understanding.
4. Invite questions from students and address any remaining doubts or confusion.

Assessment:

• Informal assessment through observation of students' participation in discussions and activities.
• Review students' completed exercises or tasks to assess their understanding of user-defined functions in Python.