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Lesson 15 of 18
New
New
- Year 9
Programmer
I can understand how maths is used by programmers.
Lesson details
Key learning points
- Algorithms are written so that a series of instructions can be followed
- In order to write a programme, the method must be understood
Keywords
Programmer - A (computer) programmer is a person who writes and tests computer programs.
Common misconception
Pupils may struggle with the 'and' statements in the logic part of the lesson.
For the statement to be true, the whole statement must be true. This refers to both clauses that are joined by the word 'and'. If even one of the clauses is not true, then the entire statement can be declared not true (even if one clause is true).
Algorithms are also used in operational research. If you want to explore other free teaching resources for KS3 – 5 students, you may be interested in the OR Society’s teaching resources.
Teacher tip
Licence
This content is © Oak National Academy Limited (2025), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.You start facing North. You turn 90 degrees clockwise before turning 180 degrees anticlockwise. In which direction are you now facing?
You start facing North. You turn 90 degrees clockwise before turning 180 degrees anticlockwise. In which direction are you now facing?
North
East
South
Q2.You start facing North. You turn 90 degrees anticlockwise before turning 180 degrees clockwise. In which direction are you now facing?
You start facing North. You turn 90 degrees anticlockwise before turning 180 degrees clockwise. In which direction are you now facing?
North
South
West
Q3.You start facing North. You turn 90 degrees clockwise before turning 270 degrees anticlockwise. You then turn 180 clockwise before turning 90 degrees clockwise. In which direction are you now facing?
You start facing North. You turn 90 degrees clockwise before turning 270 degrees anticlockwise. You then turn 180 clockwise before turning 90 degrees clockwise. In which direction are you now facing?
North
South
West
Q4.You start facing North. You turn 90 degrees anticlockwise before turning 270 degrees clockwise. You then turn 180 clockwise before turning 90 degrees clockwise. In which direction are you now facing?
You start facing North. You turn 90 degrees anticlockwise before turning 270 degrees clockwise. You then turn 180 clockwise before turning 90 degrees clockwise. In which direction are you now facing?
North
South
West
Q5.You start facing North. You turn 90 degrees anticlockwise before turning 450 degrees clockwise. You then turn 270 clockwise before turning 270 degrees clockwise. In which direction are you now facing?
You start facing North. You turn 90 degrees anticlockwise before turning 450 degrees clockwise. You then turn 270 clockwise before turning 270 degrees clockwise. In which direction are you now facing?
North
East
West
Q6.You start facing East. You turn 90 degrees clockwise before turning 450 degrees anticlockwise. You then turn 270 clockwise before turning 630 degrees clockwise. In which direction are you now facing?
You start facing East. You turn 90 degrees clockwise before turning 450 degrees anticlockwise. You then turn 270 clockwise before turning 630 degrees clockwise. In which direction are you now facing?
North
East
South
Assessment exit quiz
6 Questions
Q1.A (computer) is a person who writes and tests computer programs.
A (computer) is a person who writes and tests computer programs.
Q2.'If today is Monday, then I will go to school.' Match the statement to the conclusion.
'If today is Monday, then I will go to school.' Match the statement to the conclusion.
Q3.You meet two people: A and B. Each person either always tells the truth or always lies. A says 'Both of us are lying.' Is A telling the truth?
You meet two people: A and B. Each person either always tells the truth or always lies. A says 'Both of us are lying.' Is A telling the truth?
Yes
Can't tell/not enough information
Q4.You meet two people: A and B. Each person either always tells the truth or always lies. A says 'Both of us are lying.' Is B a liar?
You meet two people: A and B. Each person either always tells the truth or always lies. A says 'Both of us are lying.' Is B a liar?
Yes
Can't tell/not enough information
Q5.You meet two people: C and D. Each person either always tells the truth or always lies. C says 'Exactly one of us is a liar.' Is D a liar?
You meet two people: C and D. Each person either always tells the truth or always lies. C says 'Exactly one of us is a liar.' Is D a liar?
No
Can't tell/not enough information
Q6.You meet two people: E and F. Each person either always tells the truth or always lies. E says 'It is not the case that F and I are both telling the truth' Is F a liar?
You meet two people: E and F. Each person either always tells the truth or always lies. E says 'It is not the case that F and I are both telling the truth' Is F a liar?
No
Can't tell/not enough information
