2.1

• Abstraction


  Removing or hiding unnecessary details from a problem so that the important details can be focused on or more easily understood
• Decomposition


  Breaking a problem down into smaller sub-problems
• Pattern Recognition


  Looking for similarities among and within problems
• Algorithmic thinking


  Deciding on the order that instructions are carried out and identifying decisions that need to be made by the computer
• Flowchart


  A graphical representation of an algorithm
• Pseudocode


  A textual, English-like method of describing an algorithm