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CONFIDENTIAL1 Good Afternoon! Today we will be learning about Elapsed time Let’s warm up : Find the amount of change: 1) Price: $13.69 Amount Given: $ ) Price: $5.78 Amount Given: $10.00 Round the given money amount : 3) $5.07, $4.58, $8.69 4) $14.78, $24.22, $32.57

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CONFIDENTIAL2 Let’s review the previous topic Money (make change, compare and order) Currency: It is a unit of exchange, facilitating the transfer of goods and/or services. It is one form of money, where money is anything that serves as a medium of exchange, a store of value, and a standard of value. To facilitate trade between currency zones, there are exchange rates, which are the prices at which currencies (and the goods and services of individual currency zones) can be exchanged against each other.

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CONFIDENTIAL3 Coins and paper money are both forms of currency. o Penny o 1 penny, o 1 cent, o or 1¢ oNickel 1 nickel, 5 cents, or 5¢ 5 cents= 1 nickel oDime 1 dime, 10 cents Review

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CONFIDENTIAL4 Review oQuarter 1 quarter, 25 cents, Dollar Bill 1 Dollar 100 cents, or 100¢ Count by 100 to count dollars. $1.00, $2.00, $3.00 and so on. 4 quarters = 1 Dollar 20 nickels = 1 Dollar 10 dimes = 1 Dollar

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CONFIDENTIAL5 Make Change Start at $7.67. Count up to $10.00 $7.68 $7.69 $7.70 $7.75 $8.00 $9.00 $10.00 Mary bought a bag at a price of $7.67; Amount given to the shopkeeper was $ What change did she get? Review

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CONFIDENTIAL6 Review To check the change count the bills and coins from the greatest to least value. $1.00 $2.00 $2.25 $2.30 $2.31 $2.32 $2.33 So Mary should receive $2.33 as change. Make Change

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CONFIDENTIAL7 Review Compare and Order Money Amounts You can use a place value chart to compare money amounts. Start at left. Look for the first place where the digits are different. Example: Compare $ and $ Hundred Dollars Ten DollarsOne Dollar Cents Samedifferent The amount $ has more ten dollars than $ So, $ > $306.97

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CONFIDENTIAL8 Review Round Money Round: $7.13, $6.89, $6.95 Step 1: Find the digit in the dollars place. $7.13 $6.89 $6.95 Step 2: Look at the place to the right of the dollars place. $7.13 $6.89 $6.95 Step 3: If the digit is less than 5, round down. If the digit is 5 or greater, round up. $7.13 $7.00 $6.89 $7.00 $6.95 $7.00

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CONFIDENTIAL9 Let’s start the topic Elapsed time A.M.: A name for time between 12:00 midnight and 12:00 noon. On school days you might wake up at 7:00 A.M. P.M.: A name for time between 12:00 noon and 12:00 midnight. Many people eat dinner at 6:00 P.M. Today we will discuss about the time. A day has 24 hours. These 24 hours is divided into two time zones. These are “A.M.” and “P.M.”. The standard unit of time is second.

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CONFIDENTIAL10 Time Facts 60 seconds1 minute 15 minutes1 quarter-hour 60 minutes1 hour 90 minutes1 ½ hours 180 minutes3 hours The simple conversion table for time is: To convert from minutes to seconds multiply by 60 and to convert from seconds to minutes divide by 60. Similarly, To convert from hours to minute multiply by 60 and to convert from minute to hours divide by 60.

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CONFIDENTIAL11 9:15 A.M. Nine-fifteen in the morning, or Quarter after nine, or Fifteen minutes after nine 4:25 P.M. Four twenty-five in the afternoon, or 25 minutes after 4 Tell Time

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CONFIDENTIAL12 Tell Time 15 minutes (min) = ¼ hour (1/4 h) or 1 quarter hour 30 minutes (min) = ½ hour (1/2 h) or 2 quarter hours

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CONFIDENTIAL13 45 minutes (min) = ¾ hour (3/4 h) or 3 quarter hours 60 minutes (min) = 1 hour (1 h) or 4 quarter hours Tell Time

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CONFIDENTIAL14 Elapsed Time Elapsed Time: It is the amount of time that passes from the start to the end of an activity. Example: How much time has elapsed between 8:20 A.M. and 11:35 A.M.?

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CONFIDENTIAL15 Step 1: First count the number of hours. Elapsed Time From 8:20 to 11:35 is 3 hours.

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CONFIDENTIAL16 From 11:20 to 11:35 is 15 minutes. Step 2: Then count the number of minutes. Elapsed Time So, 3 hours 15 minutes has passed.

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CONFIDENTIAL17 Count past midnight What time is 4 hours 20 minutes after p.m.? Start at p.m. Count on 4 hours > > > > 3.00 Add on 20 minutes: 3.20 a.m. (Note: After midnight write A.M.) So, 4 hours 20 minutes after p.m. is 3.20 a.m.

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CONFIDENTIAL18 Assessment Complete the conversion tables: Hours12345 Minutes60180 Seconds Minutes14 Hours58 Minutes ) 2) 3)

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CONFIDENTIAL19 Calculate how much time has elapsed between: 4) 5:30 A.M. and 8:35 A.M.? 5) 7:55 P.M. and 10:40 P.M.? 6) 2:15 A.M. and 9:25 A.M.? 7) 8:30 P.M. and 9:40 P.M.?

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CONFIDENTIAL20 Calculate how much time has elapsed between: 8) 8:30 A.M. and 1:10 P.M.? 9) 9:35 A.M. and 3:40 P.M.? 10) 10:15 P.M. and 9:25 A.M.?

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CONFIDENTIAL21 Very Good! Let's Review A.M.: A name for time between 12:00 midnight and 12:00 noon. On school days you might wake up at 7:00 A.M. P.M.: A name for time between 12:00 noon and 12:00 midnight. Many people eat dinner at 6:00 P.M. A day has 24 hours. These 24 hours is divided into two time zones. These are “A.M.” and “P.M.”. Time Facts 60 seconds1 minute 15 minutes1 quarter-hour 60 minutes1 hour 90 minutes1 ½ hours 180 minutes3 hours The simple conversion table for time is:

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CONFIDENTIAL22 Review 9:15 A.M. Nine-fifteen in the morning, or Quarter after nine, or Fifteen minutes after nine 4:25 P.M. Four twenty-five in the afternoon, or 25 minutes after 4 Tell Time

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CONFIDENTIAL23 Review 45 minutes (min) = ¾ hour (3/4 h) or 3 quarter hours 60 minutes (min) = 1 hour (1 h) or 4 quarter hours Tell Time

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CONFIDENTIAL24 Review Elapsed Time: It is the amount of time that passes from the start to the end of an activity. How much time has elapsed between 8:20 A.M. and 11:35 A.M.? Step 1: First count the number of hours. From 8:20 to 11:20 is 3 hours. Step 2: Then count the number of minutes. From 11:20 to 11:35 is 15 minutes. So, 3 hours 15 minutes has passed.

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CONFIDENTIAL25 Review Count past midnight What time is 4 hours 20 minutes after p.m.? Start at p.m. Count on 4 hours > > > > 3.00 Add on 20 minutes: 3.20 a.m. (Note: After midnight write A.M.) So, 4 hours 20 minutes after p.m. is 3.20 a.m.

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CONFIDENTIAL26 You have done a nice job. See you in the next session.

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