1. Warm Up Work Silently. Ask Ms. H questions!
What does it mean “to evaluate”?
What does it mean if a college basketball recruiter is “evaluating a player”?
Would you rather be able to hit the same spot on the backboard every time OR always score an average of 40 points?
15 minutes

2. Unit 1
Grandmasters
3 minutes

3. Chemistry Tracker What’s a tracker? What’s a GLE?
- To track your success in Unit 1
- It will show you how well you did on each GLE
What’s a GLE?
Resume- shows your experience from that experience you got skills
Shows people who are trying to hire you why you would be a good person for the job. This is the same thing
It will track how you do on each GLE to see if you have the skills you should have for chemistry.
80% or above it considered mastery….mastery means?? Master P, Grandmaster Flash?
1 person to pass out calculators; I pass out exams -

4. The BIG GOAL:
80% Mastery
of ALL GLEs

5. Why 80% Mastery? Graduate high school Pass the GEE Science Exam
Graduate college
Solve your own problems
$$$

6. If I didn’t get mastery, is that it?
No!
Get 20 min tutoring
Retake the GLEs you didn’t master
Raise your grade
Increase future opportunities!

7. Group Work: Complete Resumes
Introduce yourself to your team
Always help each other, but work only with your team.
Keep your voices below the music.
RAISE your hand to ask questions.
Stack your group’s TESTS & Résumé I will pick them up

8. Goal Sheets I believe you all 1) CAN and 2) WILL master Chemistry
Pick 1 goal for yourself
Relate that goal to mastering Chemistry
Complete your goal sheet
Then, EARN IT

9. Done with Unit 1…
Unit 2:
Matter
Test on Friday

10. The study of MATTER and its CHANGES
Chemistry
The study of MATTER and its CHANGES

11. Criteria To be MATTER it… must have mass (be made of stuff)
must have volume (take up space)
Spend time changing the definition of matter to the

12. Does this matter?
count down.
3-2-1
YES or NO

13. Does this matter?
book

14. Does this matter?
car

15. Does this matter?
thoughts

16. Does this matter?
water

17. Does this matter?
happiness

18. Does this matter?
eggs

19. Does this matter?
opinions

20. Does this matter?
air

21. Does this matter?
grades

22. Does this matter?
chair

23. Does this matter?
sleepiness

24. Does this matter?
jello

25. Does this matter?
hunger

26. Does this matter?
Sulfuric acid

27. Does this matter?
Sodium hydroxide

28. So….
Chemistry is about studying STUFF in the world and how that stuff can change.

29. Accuracy, Precision and Percent Error

30. Accuracy = getting the right answer
ON AVERAGE
Other words for “right answer”
True value
Accepted value
Actual value
Textbook value
Literature value

31. Accurate or not? Average = 6.0 Literature Value= 6.03 Trial
Measurement 1
7.1 2
5.9 3
8.0
Average =
6.0
Literature Value= 6.03

32. Precision = getting the SAME answer again and again

33. Precise or not? Average = 5.53 Textbook Value= 7.10 Trial Measurement2
5.54 3
5.52
Average =
5.53
Textbook Value=
7.10

34. Accurate? Precise? Both? Neither?
Trial
Measurement 1
5.5 2
10.0 3
4.5
Average =
10.0
Accepted Value=
20.5

35. Accurate? Precise? Both? Neither?
Trial
Measurement 1
73.7 2
73.4 3
73.6
Average =
73.6
Accepted Value=
73.57

36. Percent error
Percent error= Tells you how far off your measurement is.
Not doing it. Add Key Points, add IP questions. ~ 10

37. Accuracy, Precision and % Error
Percent Error
%E = Vactual – Vmeasured X 100
Vactual
| |
Addd slide what is acceptable percent error

38. Accuracy, Precision and % Error
Percent Error Formula includes absolute value sign
You may never have a negative answer with % error, just drop the negative!

39. Accuracy, Precision and % Error
Measuring a string you get 18 cm, but Ms. Hughes tells you the string is actually 20 cm long.

40. Accuracy, Precision and % Error
[(20 – 18)/20] x 100

41. Accuracy, Precision and % Error
[(20 – 18)/20] x 100 = 10%

42. Accuracy, Precision and % Error
Measured: 88 mL
Actual: 83 mL

43. Accuracy, Precision and % Error
6.0%

44. Accuracy, Precision and % Error
Measured: 140 g
Actual: 122 g

45. Accuracy, Precision and % Error
14.8%

46. Accuracy, Precision and % Error
Measured: 3438 m
Actual: 4888 m

47. Accuracy, Precision and % Error
29.7%

48. Stations! 8 total Answer all on separate sheet of paper
Return calculators when finished
Work on your own
If finished early, start binder organization

49. Synergy Exercise What’s Synergy? For now, work ALONE Best ranking wins
Find out tomorrow…
For now, work ALONE
Best ranking wins

50. Binders
Do nows/exit slips
Homework
Notes/Practice
Demos/Labs
Tracking

51. Homework Top Ten: how’d we do?
Half sheet of accuracy + precision, % error practice

52. Exit slip Define accuracy Define precision
Can percent error ever be negative? Why or why not?