It's all downhill from here. Scholars model a sewer system using straws and other household materials. They test out their systems using colored water and discover how gravity plays an essential role in sewers.

Concepts

sewage, gravity, technology resources

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Instructional Ideas

• Take the class outside for the project
  

Classroom Considerations

• Requires some basic materials; see the resource for the complete list
  
• Learners should be familiar with gravity
• Fits as one part of the Explore STEM in the City! series

Pros

• Lists some recommended reading materials
  
• Includes a tip for not having to deal with water
  

Cons

• No student worksheets