MATHEMATICS 6 PPT Q4 - Reading and Interpreting Water Meter Readings.pptx

MATHEMATICS 6 PPT Q4 - Reading and Interpreting Water Meter Readings.pptx

1. Reading and Interpreting Water Meter Readings M6ME-IVd-10 Day 2

2. Let’s review on Subtraction (using flashcard). REVIEW

3. 1) H ow many of the you have faucets at home? 2) Do you think water is important? Explain. 3) Can you save water? How? Why is it necessary for us to save water?

4. The older style of water meters are those with small dials. It looks like a series of small clocks that turn clockwise. The unit we use for his measurement is cubic meters (m 3 ). The rules of reading a water meter with dials are similar to the way an electric meter is being read. (Discuss how to read water meter on page 305) PRESENTATION

5. Reading Water Meters To read water meters: Start reading from right to left (clockwise). Read the number by the pointe r on the dial. When the pointer is between two numbers, the lower number is recorded. 2. When the pointer is directly on the number, look at the dial to the right. If it has passed zero, use the next higher number. If the dial has not passed zero, use the lower number. 3. Record the numbers from right to left.

6. Discuss Example #4: Read and interpret the dials on the meter below. The rightmost dial has the highest value.

7. To get the exact meter reading, start from right to left or the highest numbered dial (clockwise) So, the water meter shows 3518. Today, most households use a water meter with odometer to measure the amount of water consumption.

8. See picture below.

9. Like in the electricity, the water consumed is also measured by a meter and is expressed in cubic meters. The water meter is not the same as the electric meter. It is a digital meter that shows 7 digits. The last three digits at the right form the decimal or fractional part when measuring the amount of water consumed. To get the actual reading in cubic meters, multiply the numbers that appears by 1/1000 or 0.001. 1 m³ = 1000 L So the number of cubic meters consumed based on the given water meter above is 0.592 m³ or 592 L

10. GROUP ACTIVITY Give the readings on these water meters. 1. 0 0 0 0 0 7 9 ______________ 2. 0 0 0 2 6 5 2 ______________ Answer: 1. 0 0 0 0 0 7 9 0.079 m³ or 79 Liters 2. 0 0 0 2 6 5 2 2.652 m³ or 2 652 Liters

11. To compute the water consumption for a particular period of time, simply subtract the previous reading from the present reading. Example: The Paz family consumed 0.972 m³ of water last month and 10.965 m³ this month. How many cubic meters of water did they consume? Present Reading: 10.865 m³ Previous Reading: 0.972 m³ Water Consumed: 9.893 m³

12. The Paz family consumed 9.893 m³ of water this month Use of a Table Materials: activity cards, drawing of the dial Mechanics: Distribute activity cards to each group. GROUP ACTIVITY

13. Household Meter Reading Units Water Consumed m 3 L A 0003.947 B 0012.679 C 0009.156 D 0016.056 E 0007.156 Initial Reading is 001.347. Discussion: a)Complete the table. b)Which household consumed the most? the least? c)What is the average monthly consumption of the 5 households?

14. DEVELOPING MASTERY

15. APPLICATION

16. To read a water meter: a. Express the reading in cubic meters (m³) b. The last three digits at the right show the fractions of cubic meters of water consumed. c. To find the water consumption, subtract the previous reading from the present reading. GENERALIZATION How do you read a water meter?

17. EVALUATION

18. ASSIGNMENT Make a commitment on how you can help save water at home and in school.

19. Thank You for Listening DLL ctto Annalice Quinay PPT Agustina Tan