Learning Objective: Understand how to use selection to create a simple calculator

 Starter: 
Recap on Python - Click on the link HERE
and have a go at the questions.
Check and edit your answers.

 Main:
Watch the video about Selection HERE

Red Task
Open Python 3.4 IDLE in all programs.
Open your Hello World programs.








Copy the text below underneath your program
Capture.PNG
Check your code is correct by running your program (F5)
Input your name and press enter then input yes or no and press enter.
What happens? Are there any errors?

Go to classroom.google.com
Go to your class code and find your Python Evidence Document
Take a snip of your code and program running using the snipping tool and paste into the Lesson 1: Python Syntax box.

Extension: Can you explain what the code is doing? Can you use any keywords? E.g. String, function, variable?

Amber Task
You are now going to create a simple calculator in Python.

In Python a whole number is called an INTEGER and a decimal number is called a FLOAT. We represent them as int and float in our code.

In Python a word is called a STRING (a string of characters). We represent this as str in our code.

Open a new file in Python 3.4 IDLE
Copy the text below into the window
Capture1.PNG
Run the program (F5)
Save your program as Calculator
Input a number and press enter then input another number and press enter.
What happens? Are there any errors?

Green Task
You are now going to create an option for the user to choose which operator they use to make the calculation. The computer does not have a symbol for some of the operators (divide and times) so they use different symbols:
Addition = +
Minus = -
Multiply = *
Divide = /

Add to your Calculator code using the code below Capture2.PNG
Run the program (F5)
What happens? Are there any errors?

Using your knowledge from your previous codes, add more code to make the program choose multiply or divide.
Start your coding where it says #HERE (Delete this line of code)

Tips:
Use the code from the amber task to help you
Use a partner to help with any error checking
You will need 4 more lines of code
Don’t forget to test your code by running your program (F5)

Extension:
Go to codecademy.com and sign up using google

Plenary:
Add a snip of the code and the program to your evidence document


Annotate the code to explain what it is doing

Comments

Post a Comment

Popular posts from this blog

10n2

Learning Objective: Understand the requirements of an NEA Consolidate learning of hardware and operating systems Starter: Exemplary NEA Document This is not full marks but can give you an idea of the work that is put into the NEA Main: Task 1 Complete an evaluation of your NEA project. 1. Comment on each subtask and how well you have solved the problem 2. Comment on any improvements you would make if you were to complete this again. Task 2 Work through Homework 14/15 to complete before next Monday Task 3 Work through Homework 16 to complete for the test
Read more

10n2

Image
Learning Objective: Be able to show your understanding of basic programming using comments in your code. Be able to ensure your code is robust by using a test table. Starter: Open your NEA documents: - Evidence Document - Your Code - Programming slides of NEA Main: Task 1 1. Ensure you have created a full menu with all options, loops and selection (if). 2. Add comments to your code. 3. Screen shot the code of your main menu in to your evidence document. Task 2 1.  Complete slide 3 and 5 of the Programming slides for NEA; adding code for the first option of the menu. 2. Comment on this code. 3. Screenshot the code and place in your evidence document. Task 3 Have you tested your code? Did it run correctly? 1. Develop your testing table using your initial test plan. Test every aspect of your first 2 tasks. Plenary: What will be the next part of the NEA programming? What will you need to do for the next option?
Read more