1. Wednesday, October 31st AGENDA: 1 – Bell Ringer 2 – Homework Review 3 – Precision and Accuracy 4 – Chemical and Physical Changes Packet due tomorrow Today’s Goal: Students will be able to explain the difference between precision / accuracy and chemical / physical changes. Homework 1. Classroom Materials (see p. 3)

2. Wednesday, Oct 31st Objective: Students will be able to explain the difference between precision / accuracy and chemical / physical changes. Bell Ringer (p. 15): 1.What is the difference between a physical property and a chemical property? 2.What is your definition of accurate? 3.What is your definition of precise?

3. 4 MINUTES REMAINING…

4. Wednesday, Oct 31st Objective: Students will be able to explain the difference between precision / accuracy and chemical / physical changes. Bell Ringer (p. 15): 1.What is the difference between a physical property and a chemical property? 2.What is your definition of accurate? 3.What is your definition of precise?

5. 3 MINUTES REMAINING…

6. Wednesday, Oct 31st Objective: Students will be able to explain the difference between precision / accuracy and chemical / physical changes. Bell Ringer (p. 15): 1.What is the difference between a physical property and a chemical property? 2.What is your definition of accurate? 3.What is your definition of precise?

7. 2 MINUTES REMAINING…

8. Wednesday, Oct 31st Objective: Students will be able to explain the difference between precision / accuracy and chemical / physical changes. Bell Ringer (p. 15): 1.What is the difference between a physical property and a chemical property? 2.What is your definition of accurate? 3.What is your definition of precise?

9. 1minute Remaining…

10. Wednesday, Oct 31st Objective: Students will be able to explain the difference between precision / accuracy and chemical / physical changes. Bell Ringer (p. 15): 1.What is the difference between a physical property and a chemical property? 2.What is your definition of accurate? 3.What is your definition of precise?

11. 30 Seconds Remaining…

12. Wednesday, Oct 31st Objective: Students will be able to explain the difference between precision / accuracy and chemical / physical changes. Bell Ringer (p. 15): 1.What is the difference between a physical property and a chemical property? 2.What is your definition of accurate? 3.What is your definition of precise?

13. BELL- RINGER TIME IS UP!

14. Wednesday, Oct 31st Objective: Students will be able to explain the difference between precision / accuracy and chemical / physical changes. Bell Ringer (p. 15): 1.What is the difference between a physical property and a chemical property? 2.What is your definition of accurate? 3.What is your definition of precise?

15. Wednesday, October 31st AGENDA: 1 – Bell Ringer 2 – Homework Review 3 – Precision and Accuracy 4 – Chemical and Physical Changes Packet due tomorrow Today’s Goal: Students will be able to explain the difference between precision / accuracy and chemical / physical changes. Homework 1. Classroom Materials (see p. 3)

16. Homework 1. Classroom Materials – Bring classroom materials from page 3 by Thursday at the latest. I will not provide calculators or writing utensils for the rest of the year.

17. Shout Outs Period 1 – Yolanda Period 2 – Malik Period 3 – Darryl

18. Notes: Please take out your notebook or a piece of binder paper Topic: Data Analysis Date: 10/30/2012

19. Independent v. Dependent Independent Variables are causes. Dependent Variables are effects.

20. Examples You pay attention in class so you get a good grade on your quizzes.

21. Examples You pay attention in class so you get a good grade on your quizzes. Cause: Paying Attention Effect: Good Grade

22. Examples You pay attention in class so you get a good grade on your quizzes. Cause / Independent Variable: Paying Attention Effect / Dependent Variable: Good Grade

23. Examples You eat at McDonalds every day so you gain weight.

24. Examples You eat at McDonalds every day so you gain weight. Cause: Eating at McDonalds Effect: Gain Weight

25. Examples You eat at McDonalds every day so you gain weight. Cause / Independent Variable: Eating at McDonalds Effect / Dependent Variable: Gain Weight

26. Examples You do your homework so you get a good grade.

27. Examples You do your homework so you get a good grade. Cause: Doing your homework Effect: Good grade

28. Examples You do your homework so you get a good grade. Cause / Independent Variable: Doing your homework Effect / Dependent Variable: Good grade

29. Question 7 in packet (p. 7) 7. What is the independent variable in this experiment? What is the dependent variable in this experiment?

30. Question 8 in packet (p. 8) 8. Identify the independent variable in this experiment: Identify the dependent variable in this experiment: Identify two conditions that are held constant (controlled) in this experiment:

31. Homework Review (p. 9) 1. The males of the species are larger than the females. 2. The males’ bills are shorter and less curved than those of the female. 3. The hummingbirds in the landscaped garden spent 21% of the time feeding. Of that time, 20% was spent feeding on insects and 80% was spent feeding on nectar. 4. The males get nectar from a species of Heliconia in which the flowers have shorter and less curved petals. 5. The females get nectar from a species of Heliconia in which the flowers have longer and more curved petals. 6. The hummingbirds in the forested area spent 23% of the time feeding. Of that time, 92% was spent feeding on insects and 8% was spent feeding on nectar.

32. Homework Review (p. 9) 1. Identify: Which are the quantitative data in the example above? Explain. 2. Identify: Which are the qualitative data in the example above? Explain. 3. Synthesize For each of the qualitative observations, give an example of how it could be transformed to quantitative data.

33. Homework Review (p. 10)

34. 1. Identify: What are the independent and dependent variables in this experiment? 2. Analyze What is the relationship between the amount of antacid and the length of time to neutralize the acid?

35. Week 8 Weekly Agenda Monday 10/29 – Scientific Method Tuesday 10/39 – Types of Variables Wednesday 10/31 – Precision & Accuracy, Chemical & Physical Changes Thursday 11/1 – Review Friday 11/2 – Review

36. CHAMPS for October 31st C – Conversation – No talking unless directed H – Help – RAISE HAND for questions A – Activity – Take notes so you can study later. M – Materials and Movement – Pen/Pencil, Paper P – Participation – Take notes, answer questions S – Success – Understand the Scientific Method

37. Notes: p. 11 Accuracy – How close a measurement is to the true value. Precision – How close a measurement is to other measurements

38. Accurate, Precise, Both, Neither? You shoot 1,000 baskets and make half, the other half are very close.

39. Accurate, Precise, Both, Neither? You shoot 1,000 baskets and make half, the other half are very close. Accurate

40. Accurate, Precise, Both, Neither? You shoot 1,000 baskets and hit the same place on the backboard every time.

41. Accurate, Precise, Both, Neither? You shoot 1,000 baskets and hit the same place on the backboard every time. Precise

42. Accurate, Precise, Both, Neither? You shoot 1,000 baskets and get all of them in.

43. Accurate, Precise, Both, Neither? You shoot 1,000 baskets and get all of them in. Accurate and Precise

44. Accurate, Precise, Both, Neither? You shoot 1,000 baskets and get all of them in. Accurate and Precise

45. Accurate, Precise, Both, Neither? You make 10 perfect throws to your wide receiver but he misses all of them by different margins.

46. Accurate, Precise, Both, Neither? You make 10 perfect throws to your wide receiver but he misses all of them by different margins. Neither

47. Accurate, Precise, Both, Neither? The density of an object is 5 g/mL. You do an experiment to measure the density and get the following values: 2.7, 0, 8, 4, 2 g/mL

48. Accurate, Precise, Both, Neither? The density of an object is 5 g/mL. You do an experiment to measure the density and get the following values: 2.7, 0, 8, 4, 2 g/mL Neither

49. Accurate, Precise, Both, Neither? The density of an object is 5 g/mL. You do an experiment to measure the density and get the following values: 2.70, 2.69, 8, 2.70, 2.71 g/mL

50. Accurate, Precise, Both, Neither? The density of an object is 5 g/mL. You do an experiment to measure the density and get the following values: 2.70, 2.69, 8, 2.70, 2.71 g/mL Precise

51. Accurate, Precise, Both, Neither? The density of an object is 5 g/mL. You do an experiment to measure the density and get the following values: 5.00, 4.99, 8, 4.95, 5.05 g/mL

52. Accurate, Precise, Both, Neither? The density of an object is 5 g/mL. You do an experiment to measure the density and get the following values: 5.00, 4.99, 8, 4.95, 5.05 g/mL Accurate and Precise

53. Accurate, Precise, Both, Neither? The density of an object is 5 g/mL. You do an experiment to measure the density and get the following values: 5.00, 4.50, 4.95, 5.05, 5.50 g/mL

54. Accurate, Precise, Both, Neither? The density of an object is 5 g/mL. You do an experiment to measure the density and get the following values: 5.00, 4.50, 4.95, 5.05, 5.50 g/mL Accurate

55. p. 11

59. Question 6 in packet (p. 7) 6. What is the independent variable in this experiment? What is the dependent variable in this experiment? Identify one thing that is held constant.

60. Question 6 in packet (p. 7) 6. What is the independent variable in this experiment? Type of soil. What is the dependent variable in this experiment? Identify one thing that is held constant.

61. Question 6 in packet (p. 7) 6. What is the independent variable in this experiment? Type of soil. What is the dependent variable in this experiment? Water that flows through Identify one thing that is held constant.

62. Question 6 in packet (p. 7) 6. What is the independent variable in this experiment? Type of soil. What is the dependent variable in this experiment? Water that flows through Identify one thing that is held constant. Amount of water. Why?

63. Question 7 in packet (p. 7) 7. What is the independent variable in this experiment? What’s in the container What is the dependent variable in this experiment?

64. Question 7 in packet (p. 7) 7. What is the independent variable in this experiment? What’s in the container What is the dependent variable in this experiment? Temperature rise

65. Question 8 in packet (p. 8) 8. Identify the independent variable in this experiment: Amount of salt Identify the dependent variable in this experiment: Identify two conditions that are held constant (controlled) in this experiment:

66. Question 8 in packet (p. 8) 8. Identify the independent variable in this experiment: Amount of salt Identify the dependent variable in this experiment: Plant height Identify two conditions that are held constant (controlled) in this experiment: Same height at start of experiment, same amount of water

67. Exit Ticket (p. 16) Design an experiment that determine whether studying results in better grades. 1. What is your independent variable? 2. What is your dependent variable? 3. What is your control? 4. Are your observations qualitative or quantitative?