1. Radioactive Incident Discussion Radioactivity Review
Nuclear PBL Day 6

2. Formal assessment – analyzing student responses to the exit ticket
Objectives
Today I will be able to:
Construct a ranking system to evaluate the devastation of the radioactive incidents
Apply knowledge of radioactivity to an exam review activity
Informal assessment – monitoring student interactions and questions as they complete the discussion and practice problems
Formal assessment – analyzing student responses to the exit ticket
Common Core Connection
Build Strong Content Knowledge
Value evidence
Make sense of problems and persevere in solving them

3. Lesson Sequence Evaluate: Warm – Up
Elaborate: Radioactive Incident Class Discussion
Explain/Evaluate: Radioactivity Whiteboard Problems Review
Evaluate Exit Ticket

4. Warm Up
Which type of radioactive decay (alpha, beta or gamma) can cause the most damage to humans?
Which types of radiation emit particles?
What particles do they emit?
Which types or radiation emit rays?
Take a look at your quiz. Ms. Ose will collect it after the warm up

5. Objectives Today I will be able to:
Construct a ranking system to evaluate the devastation of the radioactive incidents
Apply knowledge of radioactivity to an exam review activity

6. Homework
Study for Radioactivity Quiz on Thursday, October 16

7. Agenda Warm-Up Finish Class Discussion Radioactivity Review
Exit Ticket

8. Small Group Discussion
Construct a ranking system for the radioactive incidents
(Least Devastating to most Devastating)
Weigh out the impact of the human vs. environmental effects
Write the criteria for your ranking system on a sheet of paper
Ex. Come up with a scale
On the bottom of the paper, rank all 7 incidents from the least devastating to the most

9. Class Discussion of Ranking System
Group one will share out their ranking system and explain. Posters will be arranged. Other groups will talk about theirs is different and shift posters until we agree.

10. Class Discussion Questions
What similarities and differences were there between each ranking system?
Were there any radioactive incident posters that did not move. Why do you think they stayed in those positions?
What factors seemed to play the most important role in constructing the ranking system?

11. Further Questions Discussion:
What other questions do you have about the impact (human, environmental, community, economic etc.) of radioactive incidents?
The essential question that started this project was: "Nuclear power is a viable source of energy. How can we assess the impact of the potential
environmental and human hazards associated with nuclear power use?" Do you think we came up with a method to assess the human and environmental hazards associated with nuclear power use?
What factors do we need to be aware of if nuclear power is used in communities?

12. Radioactivity Review: Whiteboard Practice

13. Question: What is the purpose of radioactivity?

14. Answer: To make an atom more stable

15. Question: What is half-life?

16. Answer: The amount of time it takes for ½ of a sample to decay

17. Question: What is the difference between fission and fusion?

18. Answer: Fission is when atoms split apart and fusion is when an atom forms together

19. Question: What is the nuclear decay equation for the alpha decay of protactinium-231?

20. Answer: See Mr. Klotz’s Board

21. Question: What is the nuclear decay equation for the beta decay of Francium 239?

22. Answer: See Mr. Klotz’s Board

23. Question: What is the nuclear equation for the alpha decay of Samarium – 149?

24. Answer: See Mr. Klotz’s Board

25. Question: What particles are emitted in a beta emission?

26. Answer: A neutron converts to a proton emitting high speed electrons

27. Question: What is the nuclear equation for the beta decay of Xenon -152?

28. Answer: See Mr. Klotz’s Board

29. Question: What particles are emitted in an alpha emission?

30. Answer: 2 protons and 2 neutrons

31. Question: What particles are emitted in an gamma emission?

32. Answer: No particles are emitted, a high energy ray is given off

33. Question: What type of particles are emitted in a positron emission?

34. Answer: A positively charged electron

35. Question: The half-life of carbon-14 (14C) is 5,730 years
Question: The half-life of carbon-14 (14C) is 5,730 years. If a sample originally contained 3.36 g of carbon-14, how much is present after 22,920 years?

36. Answer: 0.21 grams

37. Question: There are 3.29 g of iodine-126 remaining in a sample originally containing g of iodine The half-life of iodine-126 is 13 days. How old is the sample?

38. Answer: 39 days

39. Exit Ticket What did you like about the radioactivity unit?
What did you dislike about the radioactivity unit?
What is one thing Mr. Klotz could improve about the unit next year?
Was the radioactivity incident project effective in helping you understand the concept of radioactivity?

40. Exit Ticket
What questions do you have about your quiz tomorrow?