Good Afternoon!

1. 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: $20.00 2) 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 CONFIDENTIAL

2. 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. CONFIDENTIAL

3. Review Coins and paper money are both forms of currency. • Nickel • 1 nickel, • 5 cents, • or 5¢ • 5 cents= 1 nickel • Penny • 1 penny, • 1 cent, • or 1¢ • Dime • 1 dime, • 10 cents CONFIDENTIAL

4. Review • Quarter • 1quarter, • 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 CONFIDENTIAL

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

6. Review Make Change • 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. CONFIDENTIAL

7. 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 $306.97 and $319.23 • The amount $319.23 has more ten dollars than $306.97 • So, $319.23 > $306.97 CONFIDENTIAL

8. Review Round Money Round: $7.13, $6.89, $6.95 Step 1:Find the digit in the dollars place. Step 2:Look at the place to the right of the dollars place. • $7.13 • $6.89 • $6.95 • $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 CONFIDENTIAL

9. 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. Let’s start the topic Elapsed time 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. CONFIDENTIAL

10. 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. CONFIDENTIAL

11. 9:15 A.M. Nine-fifteen in the morning, or Quarter after nine, or Fifteen minutes after nine Tell Time 4:25 P.M. • Four twenty-five in the afternoon, or • 25 minutes after 4 CONFIDENTIAL

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

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

14. 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.? CONFIDENTIAL

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

16. Elapsed Time Step 2:Then count the number of minutes. From 11:20 to 11:35 is 15 minutes. So, 3 hours15 minutes has passed. CONFIDENTIAL

17. Count past midnight What time is 4 hours 20 minutes after 11.00 p.m.? Start at 11.00 p.m. Count on 4 hours. 11.00->12.00->1.00->2.00->3.00 Add on 20 minutes: 3.20 a.m. (Note: After 12.00 midnight write A.M.) So, 4 hours 20 minutes after 11.00 p.m. is 3.20 a.m. CONFIDENTIAL

18. Assessment Complete the conversion tables: 1) 2) 3) CONFIDENTIAL

19. 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.? CONFIDENTIAL

20. 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.? CONFIDENTIAL

21. 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. Very Good! Let's Review A day has 24 hours. These 24 hours is divided into two time zones. These are “A.M.” and “P.M.”. The simple conversion table for time is: CONFIDENTIAL

22. 9:15 A.M. Nine-fifteen in the morning, or Quarter after nine, or Fifteen minutes after nine Review Tell Time 4:25 P.M. • Four twenty-five in the afternoon, or • 25 minutes after 4 CONFIDENTIAL

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

24. Review How much time has elapsed between 8:20 A.M. and 11:35 A.M.? Elapsed Time: It is the amount of time that passes from the start to the end of an activity. Step 1:First count the number of hours. From 8:20 to 11:20 is 3 hours. So, 3 hours15 minutes has passed. Step 2:Then count the number of minutes. From 11:20 to 11:35is 15 minutes. CONFIDENTIAL

25. Review Count past midnight What time is 4 hours 20 minutes after 11.00 p.m.? Start at 11.00 p.m. Count on 4 hours. 11.00->12.00->1.00->2.00->3.00 Add on 20 minutes: 3.20 a.m. (Note: After 12.00 midnight write A.M.) So, 4 hours 20 minutes after 11.00 p.m. is 3.20 a.m. CONFIDENTIAL

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