Common data types
Lesson details
Learning outcome
I can identify different data types and explain how they are processed.
Key learning points
- Common data types include integers, floating point numbers, strings, and Booleans.
- Casting allows data types to be converted.
- Using incorrect data types can cause errors.
Keywords
Data type - defines the kind of data a computer can store and the actions you can perform on it
Casting - changing the data type of a piece of data from one type to another
Common misconception
The order of instructions in a program doesn't really matter, as long as all the instructions are there.
Computers execute code line by line, in the order it's written. If you change the sequence, you're changing the steps the computer takes, and that will change the output.
Teacher tip
Emphasise the importance of precise language and clear thinking when teaching about program sequence. Consider examples of where sequences are wrong and the effects it can have on the outcomes.
Equipment
Pupils will need access to a device that can edit and run Python programs. Examples in this lesson use the RPF Code Editor https://oak.link/python-editor
Licence
Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.What does the term "sequence" mean in programming?
Q2.What is debugging?
Q3.What happens if the sequence of code is incorrect?
Q4.What is the purpose of a program?
Q5.What is an example of debugging?
Q6.What is an example of a sequence in real life?
Assessment exit quiz
6 Questions
Q1.What is casting in programming?
Q2.What can happen if you use an incorrect data type?
Q3.What is the term for a sequence of characters stored as data?
Q4.What is an example of a floating point number?
Q5.What is the result of casting a string "123" into an integer?
Q6.Which data type represents true or false values?
To help you plan your 10 computer science lesson on: Common data types, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your 10 computer science lesson on: Common data types, 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.
Our video is a tool for planning, showing how other teachers might teach the lesson, offering helpful tips, modelled explanations and inspiration for your own delivery in the classroom. Plus, you can set it as homework or revision for pupils and keep their learning on track by sharing an online pupil version of this lesson.
Explore more key stage 4 computer science lessons from the Programming: sequence unit, dive into the full secondary computer science curriculum, or learn more about lesson planning.