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As here is the BCS suggestion for coding:


BCS national curriculum demands…


Design and write programs that include 

o Sequencing: doing one step after another. 

o Selection (if-then-else): doing either one thing or another.

o Repetition (Iterative loops or recursion). 

o Language constructs that support abstraction: wrapping up a computation in a named abstraction, so that it can be re-used. (The most common form of abstraction is the notion of a “procedure” or “function” with parameters.) 

o Some form of interaction with the program’s environment, such as input/output, or event-based programming. 


Find and correct errors in their code.


Pretty much all of these are naturally a part of modelling.

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