String manipulation
I can create a program using string handling techniques.
String manipulation
I can create a program using string handling techniques.
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Lesson details
Key learning points
- The contents of a string can be validated.
- The random module can be used to generate random numbers and pick random letters from a string.
- Concatenation is a way of joining strings using the + operator to make a new string.
- Strings can be manipulated using the upper() and lower() string methods to convert the string into upper- or lowercase.
Keywords
Random - a module that can generate random numbers, pick random items or shuffle a list
Concatenation - the process of joining strings together to create a new string
Lower() - a string method that converts all letters in a string to lowercase
Upper() - a string method that converts all letters in a string to uppercase
Common misconception
The random module will only generate random numbers.
The random module can generate random characters as well as numbers.
To help you plan your year 10 computer science lesson on: String manipulation, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 10 computer science lesson on: String manipulation, download all teaching resources for free and adapt to suit your pupils' needs.
The starter quiz will activate and check your pupils' prior knowledge, with versions available both with and without answers in PDF format.
We use learning cycles to break down learning into key concepts or ideas linked to the learning outcome. Each learning cycle features explanations with checks for understanding and practice tasks with feedback. All of this is found in our slide decks, ready for you to download and edit. The practice tasks are also available as printable worksheets and some lessons have additional materials with extra material you might need for teaching the lesson.
The assessment exit quiz will test your pupils' understanding of the key learning points.
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Explore more key stage 4 computer science lessons from the Programming: strings and lists unit, dive into the full secondary computer science curriculum, or learn more about lesson planning.
Equipment
All pupils require access to devices that can edit and run Python programs. Starter code files are available to copy or use directly via the Raspberry Pi Code Editor.
Licence
Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.What is a substring?
Q2.What will the following Python code output?
123word = "asparagus"
first_three = word[0:3]
print("sp" in first_three)Code colourWhen programmers write code, they use a special tool called an IDE (Integrated Development Environment). In an IDE, different colours are used to help programmers understand the code:
- • Blue - numbers and boolean values
- • Green - strings
- • Purple - keywords
When programmers write code, they use a special tool called an IDE (Integrated Development Environment). In an IDE, different colours are used to help programmers understand the code:
- • Blue - numbers and boolean values
- • Green - strings
- • Purple - keywords
Q3.What is ASCII?
Q4.What does the following code do?
12char = "G"
print(ord(char))Code colourWhen programmers write code, they use a special tool called an IDE (Integrated Development Environment). In an IDE, different colours are used to help programmers understand the code:
- • Blue - numbers and boolean values
- • Green - strings
- • Purple - keywords
When programmers write code, they use a special tool called an IDE (Integrated Development Environment). In an IDE, different colours are used to help programmers understand the code:
- • Blue - numbers and boolean values
- • Green - strings
- • Purple - keywords
Q5.Which Python function converts an ASCII value back into a character?
Q6.What does the following Python program do?
12char = input("Enter a character: ")
print(chr(ord(char) + 1))Code colourWhen programmers write code, they use a special tool called an IDE (Integrated Development Environment). In an IDE, different colours are used to help programmers understand the code:
- • Blue - numbers and boolean values
- • Green - strings
- • Purple - keywords
When programmers write code, they use a special tool called an IDE (Integrated Development Environment). In an IDE, different colours are used to help programmers understand the code:
- • Blue - numbers and boolean values
- • Green - strings
- • Purple - keywords
Assessment exit quiz
6 Questions
Q1.What is the correct way to join the strings "blue" and "berry" into one word?
Q2.What must you include in your program to use the random library?
Q3.String is joining two or more strings together.
Q4.What will be printed by the following code?
12word = "Pinecone"
print(word.upper())Code colourWhen programmers write code, they use a special tool called an IDE (Integrated Development Environment). In an IDE, different colours are used to help programmers understand the code:
- • Blue - numbers and boolean values
- • Green - strings
- • Purple - keywords
When programmers write code, they use a special tool called an IDE (Integrated Development Environment). In an IDE, different colours are used to help programmers understand the code:
- • Blue - numbers and boolean values
- • Green - strings
- • Purple - keywords