Problems and Possible Solutions

7th Grade – Green Week

ProblemSituation that is harmful or

unwelcome (needs to be dealt with)

SolutionMeans of solving a problem or dealing

with a difficult situation

Why do we say possible solution?

Water Treatment

Water goes down the drain

Interceptor Sewer

Wet Well and Main Pump

Bar Screens Grit Chambers

Removing Small Particles

Final Cleaning and Outfall

What’s the problem?

Bar Screens Grit Chambers

Odor Control

Sludge Dewatering

Lime Stabilization

What’s the problem?

What was the solution?

Reading: CompostWith a partner read and underline the Compost reading.

During the reading think about what ingredients you would need to make compost. This will be your evidence

during the next activity.

Build your compost pileThe cup with serve as your compost container.Use the ingredients to “build” your pile.Record all the ingredients you put in the pile.Make sure you have evidence for each

ingredient you add to your pile.Record your evidence and reasoning. Be ready

to share and defend your compost pile ingredients.

Compost Pile

Ingredients + Evidence + Reasoning

Ingredients + Evidence + Reasoning

Ingredients + Evidence + Reasoning