Python programming constructs: sequencing, selection & iteration for OCR specification CD423A / E01

Start date
12 Jul 22
6 Hours
Learning Method
Remote Delivered CPD


Take your first steps to becoming a competent teacher of Python programming; this CPD will develop your foundational knowledge around the Python language. This course references the OCR J277 9-1 GCSE Computer Science specification and their Exam Reference Language, allowing you to explore practical programming and OCR’s assessment language.

You’ll learn how to write code to input, process and output data, and how to manipulate data stored in variables. Using the building blocks of sequence, selection and iteration you’ll begin to understand how programs are constructed to perform a multitude of simple and more complex tasks.

You’ll gain confidence with lots of hands-on experience under the guidance of highly successful teachers of computer science.

Mapped closely to the specifications of GCSE computer science, the course will provide you with essential knowledge leading to expertise in teaching programming.

References of exam boards:

This course has been developed to reference the OCR J277 9-1 GCSE Computer Science specification, if you’re not teaching the OCR specification you may wish to consider booking the equivalent AQA or Pearson version of the course. Alternatively, you may wish to book the agnostic remote or face-to-face version of the course.

Who is it for?

You’ll benefit from having some experience of basic programming, perhaps using a block-based language, to access this GCSE-level subject knowledge enhancement. You should have some understanding of the OCR J277 GCSE 9-1 Computer Science specification.
If you are entirely new to computer science, we recommend first participating in our one-day course: An introduction to algorithms, programming and data in computer science.

What topics are covered?

• 01 | Inputs, outputs & variables – explore how to utilise inputs and outputs in Python, including the use of variables and efficient use of simple data types.

• 02 | Building a working program – create a working Python program using inputs, outputs and variables based upon a set of user requirements.

• 03 | Selection – learn how to write branching programs using selection. Understand how to apply operators and use nested selection within a program.

• 04 | Working with selection – create a working Python program using selection and other programming techniques learnt.

• 05 | Iteration – this session will help you create code that repeats using count and condition controlled loops in Python

How will you learn?

Scheduled live, interactive online sessions led by an experienced practitioner. Flexible facilitator-supported, participant-led sessions, involving deep exploration of the subject content. The course will model teaching approaches that can be taken back to the classroom.

How long is this course?

This course is approximately 5 hours in duration, split across several days

Who is the course leader?


By the end of this course, you will:

● Become familiar with the Python programming language

● Develop some basic program constructs using variables, handling user input and output to the screen

● Use mathematical and logical operators to build functionality into programs

● Follow the flow of a program, identifying values held in variables at different stages of execution

● Create and control indefinite loop structures in programs

● Begin to evaluate programs and suggest improvements


1 Inputs, outputs & variables12 July 202216:00-17:30Virtual
2 Building a working program13 July 202200:00-00:00Virtual
3 Selection14 July 202216:00-17:30Virtual
4 Working with selection18 July 202200:00-00:00Virtual
5 Iteration19 July 202216:00-17:30Virtual

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Additional information

Our remote CPD courses for teachers are delivered across a series of sessions run at specific times and dates. Information on all course sessions can be found under the description of each course. To complete a course, all sessions are mandatory.

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