1. Elapsed Time

2. Objectiv e Students will be able to determine elapsed time: across months using a calendar, by hours and half hours using a clock.

3. Elapsed Time The difference between two times. Time includes hours, minutes, months, weeks, and days

4. Key Points to Remember You need to understand the difference between AM and PM. There are only 60 minutes in an hour. So addition won’t always work- you have to think it through.

5. Midnight starts a new day 12:00 AM midnight is the beginning of a new day. 12:00 PM is noon. Afternoon is Past Morning.

6. Cloc ks

7. Using Clocks 1. Start with hours 2. Then move on to minutes

8. Types of Questions 1. What time will it be in ____? 2. How minutes between ____ and ____? 3. How hours between ____ and ____? 4. How much time passes between ____ and ____?

9. Simple

10. 3:17 PM 11:53 PM 7:43 PM 2:51 PM What time will it be in 1 hour? 4:17 PM 12:53 AM 8:43 PM 3:51 PM

11. What time will it be 15 minutes later? If we add 15 minutes to the two minutes we have, the time will be 9:17

12. What time will it be 15 minutes later? If we add 15 minutes to the 55 minutes we have, the time will be 8:70

13. What time will it be 15 minutes later? In 5 minutes it will be 9:00. We still have 10 more minutes In 10 more minutes, it will be 9:10 or “ten minutes after 9”

14. 3:17 PM 11:53 PM 7:43 PM 2:51 PM What time will it be in 15 minutes later? 3:32 PM 12:08 AM 8:02 PM 3:06 PM

15. What time will it be? What time will it be in 2 hours & 7 min.?

16. What time will it be in 2 hrs. & 7 min.? 9:02 AM 10:0 2 AM 11:0 2AM 11:09 AM 1 Hou r 7 min.

17. 9:02 ???? 9:02 2 hr.11:02 11:097 mins. End Time: 11:09

18. What time will it be in 2 hrs. & 7 min.? 10:51 AM

19. What time will it be in 2 hrs. & 7 min.? 10:5 1AM 11:5 1AM 12:5 1PM 12: 58 PM 1 Hou r 7 min.

20. 10:51 A.M. 12:58 P.M.2 hr. 17 min. 10:51 A.M.1 hr. 5 min. 2 min. 11:51 A.M.1 hr. 11:51 A.M.12:51 P.M.2 hr. 12:51 P.M.12:56 P.M.2 hr. 5 min. 2 hr. 7 min.12:56 P.M.12:58 P.M.

21. What time will it be in 2 hrs. & 7 min.? 7:43 AM

22. 7:43 A.M. 9:50 A.M.2 hr. 7 min. 7:43 A.M.1 hr. 5 min. 2 min. 8:43 A.M.1 hr. 8:43 A.M.9:43 A.M.2 hr. 9:43 A.M.9:48 A.M.2 hr. 5 min. 2 hr. 7 min.9:48 A.M.9:50 A.M.

23. What time will it be in 2 hrs. & 7 min.? 7: 43 AM 8: 43 AM 9: 43 AM 9: 50 AM 1 Hou r 7 min.

25. Comple x

26. Using Clocks Natalie and Maria left the school at 3:05 pm. They walked for 14 minutes before arriving at Maria’s house. What time did they arrive at Maria’s house?

27. Using Clocks What operation can you use? What strategy can you use?

28. Using Clocks The Garza’s will visit their cousin, who lives 3 hours and 10 minutes away. They want to get there at 11:30 am. What time should they leave?

29. Using Clocks What operation can you use? What strategy can you use?

30. Using Clocks The sun set at 7:00 pm. It rose the next morning at 5:15 am. How much time passed from sunset to sunrise?

31. Using Clocks What operation can you use? What strategy can you use?

32. Using Clocks Mario scored a touchdown at 7:48 pm. Julio intercepted a pass and scored a touchdown 11 minutes later. What time did Julio score the second touchdown?

33. Using Clocks What operation can you use? What strategy can you use?

34. Using Clocks Melissa’s dance partner arrives at 3:30 pm and leaves at 7:45 pm. How long did they practice together?

35. Using Clocks What operation can you use? What strategy can you use?

42. Calenda rs

43. Using Calendars 1. Start with weeks 2. Then move on to days

44. Days of the Week

45. Types of Questions 1. How many days between ____ and ____? 2. How many days is it from ____ to ____? 3. How many days since _____?

46. 12/112/21 day 12/212/32 days 12/312/43 days 12/412/5 4 days 12/512/6 12/7 12/8 12/9 12/109 days 8 days 7 days 6 days 5 days

50. Months of the Year

51. Types of Questions 1. How many months between ____ and ____? 2. How many months is it from ____ to ____? 3. How many months since _____?

52. December 6  January 6 = 1 month

53. March 29  April 29 = 1 month April 29  May 29 = 1 month

57. Years

58. Using Calendars 1. Subtract the current year from the year given 2. That will give you the total number of years.

59. Mr. Johnson was born in 1955. The year is 2012. How old is Mr. Johnson? 2012 -1955 121 10 1 75 9 Mr. Johnson is 57 years old!

60. Mrs. McNulty was born in 1963. The year is 2012. How old is Mrs. McNulty? A. 57 years old B. 65 years old C. 49 years old D. 18 years old

61. Mrs. Anderson was born in 1988. The year is 2012. How old is Mrs. Anderson? A. 24 years old B. 25 years old C. 29 years old D. 18 years old

62. Mr. James was born in 1990. The year is 2012. How old is Mr. James? A. 24 years old B. 22 years old C. 23 years old D. 19 years old