Variables & Constants
Lesson Instructions
Watch and follow the YouTube video, the lesson contains three parts:
Key Information and content - all you need to do here is watch and listen
Learning activity - this activity involves answering different questions about variables and constants.
Consolidation - these are past exam question and are for deliberate practice to check your understanding.
Variables and Constants Full Lesson Video.mp4Task - Identifying Variables & Constants
Task - Exam Questions - Deliberate Practice
Mark Scheme
Question 1 (a)
1 mark for each bullet point
Constant: Pi
Variables: WheelSize or Circumference
Question 1 (b)
1 mark for each bullet point
The value of a constant is set when the constant is declared
The value of a variable is set while the program is running
The value of a constant cannot be changed once the program is running/can only be set at dedign time
A variable has no value at design time.
Mark as pair:
An integer is a whole number
A real number can include decimal fractions
Question 2
Constant: PlayerKey
Variable: Position/KeyPressed