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      Operational researcher

      Lesson details

      Learning outcome

      I can understand how maths is used in operational research.

      Key learning points

      1. Problem solving techniques can be usefully applied
      2. New information must be interpreted quickly and correctly
      3. The 'optimal' solution may mean different things to different people

      Keywords

      • Logistics - Logistics is the careful organisation of a complicated project (set of activities) so that it happens in a successful and effective way.

      Common misconception

      Pupils may not consider the maximum of the 'bins' in learning cycle 1.

      It can be helpful for pupils to have a running total for the values assigned to each 'bin' so that they know when it is full and no more values can be assigned there.

      Teacher tip

      Operational research is the broad term for a wide ranging of mathematical areas focused around using problem solving techniques. If you want to explore other free teaching resources, you may be interested in the OR Society’s teaching resources.

      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.
      The (arithmetic) __________ for a set of numerical data is the sum of the values divided by the number of values. It is a measure of central tendency representing the average of the values.

      Correct answer: mean
      median
      mode
      range

      Q2.
      Sam scored 85, 92, 88, 90, and 95 on five tests. What is Sam's average test score?

      Correct Answer: 90

      Q3.
      The daily high temperatures for a week were 24°C, 26°C, 28°C, 27°C, 26.5°C, 27.5°C, and 28.5°C. What was the average high temperature for the week (2 d.p.)?

      Correct Answer: 26.79, 26.79°C

      Q4.
      The monthly rainfall amounts for a year were 63.5 mm, 81.3 mm, 104.1 mm, 71.1 mm, 91.4 mm, 114.3 mm, 99.1 mm, 79.2 mm, 68.6 mm, 86.4 mm, 106.7 mm, and 96.5 mm. What was the average (1 d.p.)?

      Correct Answer: 88.5 mm, 88.5

      Q5.
      The mean of five numbers is 8. Four of the numbers are 5, 7, 9, and 10. What is the fifth number?

      Correct Answer: 9

      Q6.
      You have a set of 10 numbers. The mean of these numbers is 15. If you add 5 to each number in the set, what will be the new mean?

      Correct Answer: 20

      6 Questions

      Q1.
      is the careful organisation of a complicated project (set of activities) so that it happens in a successful and effective way.

      Correct Answer: Logistics

      Q2.
      This table shows various tasks in a project. How long does it take to complete activity C?

      An image in a quiz
      Correct Answer: 35 mins, 35 minutes

      Q3.
      This table shows various tasks in a project. How long does it take to complete activity E?

      An image in a quiz
      Correct Answer: 60 mins, 60 minutes, 1 hour

      Q4.
      This table shows various tasks in a project. What activity must be completed before activity C can start?

      An image in a quiz
      Correct Answer: B, Activity B

      Q5.
      This table shows various tasks in a project. Which activities must be completed before activity E can start?

      An image in a quiz
      Correct answer: A
      Correct answer: B
      Correct answer: C
      D
      F

      Q6.
      This table shows various tasks in a project. If only 1 person was working on the project, how long (in minutes) would it take to complete the project?

      An image in a quiz
      Correct Answer: 315 mins, 315 minutes, 315

      To help you plan your 9 maths lesson on: Operational researcher, download all teaching resources for free and adapt to suit your pupils' needs...