1) Remix the Bronx River Water Testing Project and put your name and period before the project name. (Block _ FirstName LastName - Bronx River Water Testing Project) 2) Press the green flag and enter the following teacher-provided data. Notice what the organisms say after each data is entered: Nitrates: 25 mg/L Dissolved Oxygen: 20 ppm Salinity: 15 psu Temperature: 90 degrees F Discuss with your group: What happens to the fish and the duck with this teacher-provided data? Why? How would the data from each teacher-provided water quality test affect the fish and the duck? Press the green flag to try out the project and enter your data from your last Bronx River water quality testing. Nitrates: ____ mg/L Dissolved Oxygen: ___ ppm Salinity: ____ psu Temperature: ____ degrees F 3) Examine the blocks below that control the temperature variable in the Scratch Project. We’re going to review what is happening with these blocks in the sentences below. Strategy: Explain the scripts (combinations of blocks) as a sentence: “When I receive a message called “next3,” I will ask the Scratch user for the temperature to write into a text box on the screen. When the Scratch user enters the temperature, I will set a variable called “temperature” to the number that was typed in. I will send a message called “temperature” to the next script. When I receive a message called “temperature,” if the number in the “temperature” variable is between 60 and 75 degrees F, I will say “I’m in a great temperature” for 4 seconds. Otherwise, if the temperature is greater than 75, I will say “I’m a roasted fish,” and if the temperature is less than 60, I will say “I’m a frozen fish.” Then I will broadcast the message “next4” for the next step to happen. 4) There are two tests (phosphates and pH) missing from the Bronx River Water Testing Project and you need to add them! 5) According to the data you collected for phosphates and pH, is the Bronx River healthy and habitable for sealife? How do you know? Write your answer in detail below using evidence from your tests. 6) Customize at least 2 of following items and be ready to present your project: Create a new backdrop of the Bronx River Change the sprites to be different types of fish, humans, and ducks. Add a new organism if you have time. Change the messages that the fish, duck, and human each say for every level of nitrate, dissolved oxygen, salinity, temperature, phosphate, and pH.
This project was created by Code/Interactive Program Director Tom O'Connell in collaboration with the math/science D1 team at Fannie Lou Hamer Freedom High School in the Bronx, New York. The project is intended to be an extension project to Fannie Lou's longstanding Bronx River Water Testing Project, a 6-week math and science unit that uses real-world environmental analysis in a project-based learning school.
