Lesson Plan

3. Explore waste water treatment

KS4-17-11

Learning Outcomes

Describe how wastewater is treated

Higher: Can describe how wastewater is treated
Middle:
Lower:

Activities

Mission Starter - Engage

Method:

Lesson Starter: How does Thames Water help to treat wastewater?

Resources:

Lesson Starter Slide

The Story - Explore and Explain

Method:

Answer questions and take part in activities during the presentation. Stop the presentation at the relevant slides: Talk Partners; AfLs; Songs. Take part in the Choral Response Questions activity (see Assessment section) after the Keywords/Rocket Words slide.

Resources:

Presentation Sticky notes

Mission Expert - Explain

Method:

A Thames Water expert answers the question: How does Thames Water treat wastewater?

Dina Gillespie from Thames Water shows use crude sewage and how it looks after it has been treated.

Resources:

Expert Film

Mission Assignment - Elaborate

Method:

Complete the comprehension task on the handout provided which asks the pupils to explain the seven stages wastewater goes through to be cleaned. There are:

  1. Wastewater collection and where it goes
  2. Screening Process
  3. Primary Treatment
  4. Secondary Treatment
  5. Final Treatment
  6. Dealing with the sludge
  7. Back to the river

Resources:

Mission Assignment Slide

Handout

Mission Log - Evaluate

Method:

Quiz With their talk partners, the children are to go through the quiz at the end of the presentation and answer the questions. Formative Assessment Forms Students are to complete these forms where present. Assessment Trays Ask the children to place their Handouts, notebooks, Formative Assessment Forms, Investigation Sheets, into either the Discover tray or Explorer tray * Explain that the green tray means that the learner has understood the lesson well, and that the red tray means that the learner needs more time to practise. * use whichever colours of tray you have in stock, or prefer to use for this. Children to take interactive Assessment Quiz to test lesson comprehension.

Resources:

Quiz in presentation Formative assessment forms Assessment trays Interactive quiz

Assessment

Teacher Mastery

Urban lifestyles and industrial processes produce large amounts of wastewater that require treatment before being released into the environment. Sewage and agricultural wastewater require removal of organic matter and harmful microbes. Industrial wastewater may require removal of organic matter and harmful chemicals.

Sewage treatment includes:

  • screening and grit removal
  • sedimentation to produce sewage sludge and effluent
  • anaerobic digestion of sewage sludge
  • aerobic biological treatment of effluent.

Curriculum Fields

National Curriculum

Comment on the relative ease of obtaining potable water from waste, ground and salt water.

Working Scientifically Skills

Carrying out experiments appropriately, having due regard to the correct manipulation of apparatus, the accuracy of measurements and health and safety considerations