Introduction
Ozone hole is a cause of great concern. In a few years ahead it can lead to major health issues on earth if not taken care of. What can we do as global citizens on the earth to combat this problem?
Task
Students will research on the ozone hole depletion causes and effects. Efforts at domestic and international levels.They will do surveys, awareness campaigns( making pamphlets and distributing) , collection of data and its analysis. At least 10 surveys per student to be done and the sheets of evidence to be attached in the report file.Students will find out the ways to minimise the use of Ozone Depleting substances and to give their share of help in reducing ozone depletion.
Process
Students to divide themselves into groups of 4 to 5 students each.They should research on the topic based on the given sites and the questionnaire given below. List some of the ways to minimize or stop the use of ozone depleting chemicals..Design the pamphlets/posters to spread awareness on the seriousness of ozone depletion due to human activites and our role in combating it. Next prepare a survey questionnaire or use the one attached below and survey at least 10 by each student in your/near by locality, analyse the data collected by all students in a team,in the form of graphical representation.Submit your work in the form of ppt of about 12-15 slides or make a report file. First page should contain index. Followed by Introduction, hypothesis, methodology, data analysis, Result/conclusion, Acknowledgement and Bibliography.There will be a class presentation of about 5 minutes by each group to be given in the class followed by the question answer session of about 2 minutes.
Evaluation
Evaluation Rubric:
Poor Good Very Good Excellent Score
Research work
Your information gathered is not accurate and too short-1
Not enough information and research material-2
Research work is compiled systematically-3
The students obtained the crucial information and arranged systemically-4
Research work is perfect-5
Presentation Presentation Not present the task. Presentation is not correct at all. You presented the best presentation even you need some correction. The presentation is perfect
Not present the task-1
Presentation is not correct at all-2
You presented the best presentation even you need some correction-3
You presented the best presentation-4
The presentation is perfect-5
Surveys and analysis
Not enough Research material and survey forms-1
Research work is not compiled properly and not enough surveys done.-2
Enough surveys done, -3
Well made questionnaire for survey and enough surveys are done -4
Proper survey analysis is done- 5
Team work
Students didn't do their task or work cooperatively. -2
Students did their task together but didn't work cooperatively. -3
Students work cooperatively as a team. -4
Students cooperated well among them and worked collaboratively and well presented-5
Total Score: 20
Conclusion
After the presentation and completion of the project students should know about the ozone layer, its importance and the reason for its depletion. Also the international treaty regarding the ban on use of ozone depleting substances. Students should make sure that they make efforts to create awareness among the masses about the harmful effects of ozone depleting substances and the products which may release these ozone depleting substances. Lets save our Earth. Lets make effort in being Ecofriendly.
Credits
Teacher Page
Students must be given about 15 days time where in they can utilize saturday and sundays probably to conduct surveys after survey questionnaire is made. More the number of surveys better the inference. Classroom presentation must include their survey analysis. Standards Major CFC emitting countries have banned CFCs by 1996 and the amount of chlorine is falling now. But scientists believe that it'll take another 50 years for chlorine levels to return to their natural levels.