Bell Work: 9/9/14 What comes to mind when you hear the word pollution? Have you heard the term runoff? What do you think it means?

Special Report! How did the video describe storm water runoff? What are some technologies environmental engineers have designed to help reduce pollutants in runoff? While this report focuses on the Charles River in Boston, how might this issue affect the citizens of Nashville that use the Cumberland River as their water source?

Don’t Runoff Challenge Engineers are people who design and improve technologies in order to solve problems or meet needs in their communities, such as preventing pollution from contaminating local waterways. Challenge: How can we keep polluted runoff out of a clean river? Pollutants can travel directly into bodies of water where they become concentrated and more dangerous. Your challenge is to design a model city to help prevent runoff. Your design will enable cities like Nashville to prevent water pollution while creating a more “green” city.

ASK Restate your problem State what you already know List any limitations or controls

Essential Questions to ponder… Can we analyze and evaluate the impact of man’s use of earth’s land, water, and atmospheric resources?

Standards SPI 0707.7.7 Analyze and evaluate the impact of man’s use of earth’s land, water, and atmospheric resources.

City Planning What do you notice about the surface of this model? How does this surface contribute to the runoff problem?

City Snapshots Boston, MA Los Angeles, CA

City Snapshots What do you notice about the surfaces of these cities? Chicago, IL Atlanta, GA What do you notice about the surfaces of these cities? How do you think these paved surfaces are similar to the foil in our model?

Pollutants Think-Pair-Share Do you remember any pollutants from the video or have you seen any in real life? Think-Pair-Share

City Model Model Pollutants Actual Pollutants Food Coloring Dish soap Sprinkles Plastic sequins Crushed charcoal (powder) Vegetable oil Decide with your team what real pollutant the model pollutants represent…

Tweet a response… Use a Post-It Note to “tweet” about the following question: What do you think the impact would be of adding green roofs to all the buildings you see?

Bell Work: 9/10/14 Read the article “Green Roofs”. How does green roof technology help reduce runoff? How could this type of technology be used on your model city?

Don’t Runoff Challenge Engineers are people who design and improve technologies in order to solve problems or meet needs in their communities, such as preventing pollution from contaminating local waterways. Challenge: How can we keep polluted runoff out of a clean river? Pollutants can travel directly into bodies of water where they become concentrated and more dangerous. Your challenge is to design a model city to help prevent runoff. Your design will enable cities like Nashville to prevent water pollution while creating a more “green” city.

ASK Restate your problem State what you already know List any limitations or controls

Essential Questions to ponder… Can we analyze and evaluate the impact of man’s use of earth’s land, water, and atmospheric resources?

Standards SPI 0707.7.7 Analyze and evaluate the impact of man’s use of earth’s land, water, and atmospheric resources.

City Model Model Pollutants Actual Pollutants Food Coloring Dish soap Sprinkles Plastic sequins Crushed charcoal (powder) Vegetable oil Decide with your team what real pollutant the model pollutants represent…

City Pollution Chart The placement and amount of pollutants decided on today will be what is used as you test your own city models in later activities…

Our Model City… Imagine: The foil tray represents a river of clean water that flows near to the city. Imagine: When it “rains” on our model city, what do you predict will happen? Why do you think so? What happened? What you are seeing is runoff. How do you think this runoff might affect our model city?

Engineering Green Roofs Part I: Engineer a model building at least 23 centimeters (9 inches) high Materials for building structure: 40 index cards, 30 cm (1 ft.) of foil, and a roll of tape 1 cup of water will be added to your rooftop (none may run off); your building must support the weight of the saturated green roof. Part II: Engineer a roof for the building that reduces runoff by absorbing water Materials for roof: soil, gravel, moss, and sand

Imagine: Research Green Roofs by Experimenting Make a plan with your team to test the different types of green roofs. What will be your control factors and variables (independent and dependent)? How will your control group be different from your experimental groups? Record these in your STEM notebook You can earn up to $500 for detailed and accurate data.

Reflect Which natural material do you think works best to reduce runoff? Why do you think so?

Tweet a response… Use a Post-It Note to “tweet” about the following question: How can your team work together to engineer an urban landscape made of buildings, roads, and open spaces that will keep polluted runoff out of the clean river?