1. 7 - Programming
7J, K, L, M, N, O – Handling Data

2. Learning Intentions
To develop an understanding of how data is stored and handled in algorithms

3. Assessment Outcomes
7J - Define the terms variable and constant as used in an imperative language
7K – Use variables and constants
7L – describe the data types integer, real, Boolean, character and string
7M – select and justify appropriate data types for a given program
7N – perform common operations on numeric and Boolean data
7O - Use one-dimensional arrays.

4. 7J/K – Define the terms variables and constants
Constants are stored items of data that do not change as the program runs.
For example when working out the area of a circle:
Pi = 3.14
Radius = User input integer
Area = Pi x (Radius x Radius)
Print Area
Variables are stored items of data that can change as the program runs.
For example the current score in a game:
Score = 0
If Player hits target:
Score = Score + 10

5. 7L/M – Data types Data Type Type of Data Use in a program Integer
A whole number, such as 3, 45,‐453
To input a users age, marks on a test, the day of the month.
Real (Float)
A number with a fractional part (decimal) such as 3.14, 9.5, 100.1
To set up Pi in a program
String
Zero or more characters that could include letters, punctuation, symbols, and numbers
For storing names, filenames, user inputted answers.
Char
A single character, could include letters, punctuation, symbols, and numbers
For storing single letters, choice ‘a’, ‘b’, ‘c’, etc.
Boolean
A boolean variable has the value True or False.
Age verification checks.

6. 7N - perform common operations on numeric and Boolean data
Numerical Data
Data Type
Operations
Integer
Arithmetic operations
Comparison operations
Real
Arithmetic operations (but not DIV and MOD, which only apply to whole numbers)
Boolean
Logical operations
Arithmetic operations
Comparison operations
eg: = 28
eg: 456 > 34 is true • +
(addition)
< 
(less than) ‐
(subtraction)
> 
(greater than) *
(multiplication)
<=
(less than or equal to) /
(division)
>=
(greater than or equal to)
DIV
(integer division)
<> 
(not equal to)
MOD
(modulus) =
(equal to)
Logical Operations:
Not
And Or

7. 7O - Use one-dimensional arrays
Arrays are a data structure that stores multiple values of the same data type.
For example the top scores in a video game:
TopScores = [90, 80, 75, 60]
The benefits of using arrays are:
Code is easier to follow and therefore easier to debug and maintain.
A group of data can be easily processed using a FOR loop.
Arrays are addressed by counting from 0:
TopScores = [90, 80, 75, 60]
This means that each element can be addressed individually.
print(TopScores[2])
This code would output ‘75’

8. Crib – Fundamental topics
Define Sequencing and give an example
Define Selection and explain how it is achieved using:
If, Elif, Else
Case
Define Iteration and give an example of how it is achieved using:
For Loops
While Loops
Repeat Loops

9. Exam Questions
I have ripped off every exam question for Unit 1 – Fundamentals of Computing..
Answer all of the questions in the A, B, C folder.
Self Assess them all.
Get me to check them!