25% = 5 mL of vinegar, 15 mL 0% = 20 mL of vinegar Add 5 mL of acid solution to the appropriate dish. Place 5 seeds in each treatment. Place the Petri dishes in the box in the front of the room. Use the pH meter to measure the acidity of each of the 5 solutions provided for the testing, and record each reading in the chart. 4 days, remove the Petri dishes and check to see how many seeds have germinated (sprouted). Record your data in the Note any changes in the appearance of the seeds. Data (Tables and Observations): Percentage of pH # of Changes in Vinegar Germinated Appearance 100% 75% 50% 25% 0% Data Analysis (Calculations): Graph and analyze the results and discuss them in your conclusions. Results and Conclusions: Discuss applications. your observations, trends, hypothesis proven or not and why, and possible Closure Activity: Have environmental a class causes discussion of acid on rain the in results the environment. from your graph, writing possible Extension: Have student research geographical areas that have issues with acid rain and discuss the possible causes and environmental impact, and provide global solutions for these areas. Teacher Notes: Make articles students sure pertaining opportunities to engage to current the to debate students acid-rain solutions beforehand issues. at the Discuss in conclusion this unit the by causes of providing the before lab. and the discussing lab and give the SC.H.2.4.1 Acid Rain: (Copyright © 1997 Vernier Software, Holman, S.; Masterman, D., Biology with CBL. All Rights Reserved) Lesson Plan Benchmarks:
25% = 5 mL of vinegar, 15 mL 0% = 20 mL of vinegar Add 5 mL of acid solution to the appropriate dish. Place 5 seeds in each treatment. Place the Petri dishes in the box in the front of the room. Use the pH meter to measure the acidity of each of the 5 solutions provided for the testing, and record each reading in the chart. 4 days, remove the Petri dishes and check to see how many seeds have germinated (sprouted). Record your data in the Note any changes in the appearance of the seeds. Data (Tables and Observations): Percentage of Vinegar pH # of Germinated Changes in Appearance 100% 75% 50% 25% 0% Data Analysis (Calculations): Graph and analyze the results and discuss them in your conclusions. Results and Conclusions: Discuss your observations, trends, hypothesis proven or not and why, and possible applications. Closure Activity: Have a class discussion on the results from your graph, writing possible environmental causes of acid rain in the environment. Extension: Have student research geographical areas that have issues with acid rain and discuss the possible causes and environmental impact, and provide global solutions for these areas. Teacher Notes: Make sure to engage the students beforehand in this unit by providing and discussing articles pertaining to current acid-rain issues. Discuss the causes before the lab and give the students opportunities to debate solutions at the conclusion of the lab. SC.H.2.4.1 Acid Rain: (Copyright © 1997 Vernier Software, Holman, S.; Masterman, D., Biology with CBL. All Rights Reserved) Lesson Plan Benchmarks: