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Learning objective

Students should be able to explain the life cycle of the malaria parasite and assess various methods for its control, including the use of antimalarial medications, vector management, and eradication efforts. Additionally, they should outline strategies for cholera control, focusing on the provision of safe drinking water through methods such as boiling and chlorination. Case studies should include an analysis of the effects of a specific multipurpose dam project and an examination of the causes, effects, and management of pollution in a specific water body.

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Cambridge IGCSE Environmental ManagementWater and its managementPractical objective

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Quick explanation

Students should be able to explain the life cycle of the malaria parasite and assess various methods for its control, including the use of antimalarial medications, vector management, and eradication efforts. Additionally, they should outline strategies for cholera control, focusing on the provision of safe drinking water through methods such as boiling and chlorination. Case studies should include an analysis of the effects of a specific multipurpose dam project and an examination of the causes, effects, and management of pollution in a specific water body

  • This point belongs to Managing water-related disease, especially Managing water-related disease outcomes.
  • You need to be able to students should be able to explain the life cycle of the malaria parasite and assess various methods for its control, including the use of antimalarial medications, vector management, and eradication efforts. Additionally, they should outline strategies for cholera control, focusing on the provision of safe drinking water through methods such as boiling and chlorination. Case studies should include an analysis of the effects of a specific multipurpose dam project and an examination of the causes, effects, and management of pollution in a specific water body.
  • The key ideas to know are Describe, Explain, and Discuss.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

DescribeExplainDiscussIdentify

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Paper 1 structured question: Managing water-related disease

Paper 1TheoryPractical6 marks

Method

Method to Test Mosquito Control Techniques

A student sets up three small enclosed areas with stagnant water to breed mosquitoes. Area A is left untreated as a control. Area B is treated with an insecticide spray. Area C has mosquito larvae removed daily. The number of adult mosquitoes emerging is counted after 10 days.

AreaTreatmentNumber of Adult Mosquitoes
ANo treatment50
BInsecticide spray10
CLarvae removal15
  1. a

    State the independent variable in this investigation.

    Aim for approximately 1 distinct marking point.

    [1]
  2. b

    Identify the dependent variable in this investigation.

    Aim for approximately 1 distinct marking point.

    [1]
  3. c

    Suggest one control variable that should be kept constant in this investigation and explain why.

    Aim for approximately 2 distinct marking points.

    [2]
  4. d

    Describe how the student could improve the reliability of the results.

    Aim for approximately 2 distinct marking points.

    [2]
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