elapsed time. objectiv e students will be able to determine elapsed time: across months using a...
TRANSCRIPT
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Elapsed Time
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Objective
Students will be able to determine elapsed time: across months using a
calendar, by hours and half hours using a clock.
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Elapsed Time
The difference between two times.
Time includes hours, minutes, months, weeks, and days
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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.
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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.
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Clocks
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Using Clocks
1. Start with hours
2. Then move on to minutes
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Types of Question
s1. What time will it be in ____?2. How minutes between ____ and ____?3. How hours between ____ and ____?4. How much time passes between ____ and ____?
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Simple
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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
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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
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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
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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”
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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
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What time will it be?
What time will it be in
2 hours & 7 min.?
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What time will it be in 2 hrs. & 7 min.?
9:02AM
10:02
AM
11:02AM
11:09
AM
1 Hou
r
1 Hou
r
7 min
.
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9:02
????
9:02 2 hr. 11:02
11:02 11:097 mins.
End Time: 11:09
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What time will it be in 2 hrs. & 7 min.?
10:51 AM
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What time will it be in 2 hrs. & 7 min.?
10:51AM
11:51AM
12:51PM
12: 58 PM
1 Hou
r
1 Hou
r
7 min
.
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10:51 A.M.12:58 P.M. 2 hr. 17 min.
10:51 A.M. 1 hr.
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.
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What time will it be in 2 hrs. & 7 min.?
7:43 AM
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7:43 A.M.9:50 A.M. 2 hr. 7 min.
7:43 A.M. 1 hr.
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.
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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
1 Hou
r
7 min
.
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Complex
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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?
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Using Clocks
What operation can you use?
What strategy can you use?
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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?
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Using Clocks
What operation can you use?
What strategy can you use?
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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?
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Using Clocks
What operation can you use?
What strategy can you use?
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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?
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Using Clocks
What operation can you use?
What strategy can you use?
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Using Clocks
Melissa’s dance partner arrives at 3:30 pm and leaves at 7:45 pm. How long did they practice together?
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Using Clocks
What operation can you use?
What strategy can you use?
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Calendars
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Using Calendars
1. Start with weeks
2. Then move on to days
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Days of the Week
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Types of Question
s1. How many days between ____ and ____?2. How many days is it from ____ to ____?3. How many days since _____?
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12/1 12/2 1 day
12/2 12/3 2 days12/3 12/4 3 days
12/4 12/5 4 days
12/5 12/6
12/6 12/7
12/7 12/8
12/8 12/9
12/9 12/10 9 days
8 days
7 days
6 days
5 days
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Months of the Year
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Types of Question
s1. How many months between ____ and ____?
2. How many months is it from ____ to ____?3. How many months since _____?
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December 6 January 6 = 1 month
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March 29 April 29 = 1 month
April 29 May 29 = 1 month
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Years
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Using Calendars
1. Subtract the current year from the year given
2. That will give you the total number of years.
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Mr. Johnson was born in 1955. The year is 2012. How old is Mr. Johnson?
2012-1955
1211
10101
75
9
Mr. Johnson is 57 years
old!
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Mrs. McNulty was born in 1963. The year is 2012. How old is Mrs. McNulty?
A. 57 years oldB. 65 years oldC. 49 years oldD. 18 years old
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Mrs. Anderson was born in 1988. The year is 2012. How old is Mrs. Anderson?A. 24 years oldB. 25 years oldC. 29 years oldD. 18 years old
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Mr. James was born in 1990. The year is 2012. How old is Mr. James?
A. 24 years oldB. 22 years oldC. 23 years oldD. 19 years old
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