2.1

2.1

1. Computational thinking

   • Key Words
     • Algorithm: Steps to provide a solution to a problem, usually represented in flowcharts or pseudocode.
     • Decompose: Breaking down a large problem into smaller sub-problems.
     • Abstraction: Representing 'real world' problems in a computer using variables and symbols and removing unnecessary elements from the problem
     • Algorithmic thinking: Identifying the steps involved in solving a problem.
     • Sequence: Completing steps in the order which they must happen.
     • Selection: Where a choice is made in a program depending on the condition or outcome.
     • Iteration: Act of repeating or looping specific section of code.
   • What is computational thinking?
     • The thought process involved in formulating a problem and its solution(s), so that a computer, human or machine can effectively carry out.
   • How do you think computationally? To effectively solve problems you need to...
     • Decompose
     • Abstract
     • Algorithmic thinking
     • Create algorithms
   • Flowcharts
     • Displays an algorithm in diagram form using symbols and arrows to show the flow of information
   • Pseudo code
     • A structured use of English used to define the steps used to solve a problem.

2. Flowcharts

   • Start/stop
     • Always start and end with this.
   • Sub routine
     • Sequence that performs a specific task.
     • You can use this within your flowchart to show more detail in a specific section
   • Input/Output
     • Use when there is an input or output required e.g. user inputs their name, program displays their name.
   • Process
     • To do something in a program e.g. a calculation