Reading �and �Interpreting� Water Meter Readings �M6ME-IVd-10

Day 2

DRILL

Game: “Name the Parents”

Mechanics:

1)Form 4 groups of equal number.

2)The teacher gives a number.

Ex.: I am number 8.

Name my parents by using any of the 4 processes.

3)The teacher gives the condition e.g. – I’ll count 1 to 10 when I reach 10 everybody stops. Some pupils acts as observer – as to which group did it fast.

4)The game starts with pupil 1. He writes his answer on the board, gives the chalk to the next child, and goes at the back. This continues until everyone in the group has given his answer.

Let’s review on Subtraction (using flashcard).

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REVIEW

1) How 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?

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 (m³). 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

Reading Water Meters

To read water meters:

1. Start reading from right to left (clockwise). Read the number by the pointer 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.

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

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.

See picture below.

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

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

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

The Paz family consumed 9.893 m³ of water this month

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Use of a Table

Materials: activity cards,

drawing of the dial

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Mechanics: Distribute activity cards to each group.

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GROUP ACTIVITY

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?

DEVELOPING MASTERY

APPLICATION

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?

EVALUATION

ASSIGNMENT

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

Thank You

for Listening

DLL ctto Annalice Quinay

PPT Agustina Tan