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Remember and think ! Some children wasted 1,350 mL brushing their teeth; i.e 1L 350 mL. It took 30 seconds wasting those millilitres. HOW TO SAVE WATER: What happens if we do not turn off the tap on time? Noèlia Callau Codorniu March 2008 LESSON 7

Remember and think !

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Remember and think !. LESSON 7. Some children wasted 1,350 mL brushing their teeth; i.e 1L 350 mL. It took 30 seconds wasting those millilitres. HOW TO SAVE WATER: What happens if we do not turn off the tap on time? - PowerPoint PPT Presentation

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Page 1: Remember and think !

Remember and think !

• Some children wasted 1,350 mL brushing their teeth; i.e 1L 350 mL.

• It took 30 seconds wasting those millilitres.

HOW TO SAVE WATER: What happens if we do not turn off the tap on time?

Noèlia Callau Codorniu March 2008

LESSON 7

Page 2: Remember and think !

Remember and think !

HOW TO SAVE WATER: What happens if we do not turn off the tap on time?

Noèlia Callau Codorniu March 2008

Page 3: Remember and think !

Remember and think !

What can I do to find it out?

How do I know?

What do I have to takeinto account?

HOW TO SAVE WATER: What happens if we do not turn off the tap on time?

Noèlia Callau Codorniu March 2008

Page 4: Remember and think !

Water wasted in 30 sec.= 1,350 mL = 1L 350 mL.

1 min. = sec.60 = 30 x

60:30 = 60

2

2

HOW TO SAVE WATER: What happens if we do not turn off the tap on time?

Noèlia Callau Codorniu March 2008

Page 5: Remember and think !

If in 30 seconds we wasted 1,350 mL, in 1 minute we would waste…

1 min. = 60 sec. = 30 x 2

1,350 mL x 2 =

HOW TO SAVE WATER: What happens if we do not turn off the tap on time?

Noèlia Callau Codorniu March 2008

Page 6: Remember and think !

1,350 mL x 2 =

1,

3 5 0

X 2

1,000 300 50

2

HOW TO SAVE WATER: What happens if we do not turn off the tap on time?

Noèlia Callau Codorniu March 2008

Page 7: Remember and think !

1,

3 5 0

X 2

1,350 mL x 2 =

HOW TO SAVE WATER: What happens if we do not turn off the tap on time?

Noèlia Callau Codorniu March 2008

Page 8: Remember and think !

1,

3 5 0

X 2

0

1

1,350 mL x 2 =

HOW TO SAVE WATER: What happens if we do not turn off the tap on time?

Noèlia Callau Codorniu March 2008

Page 9: Remember and think !

1,

3 5 0

X 2

7 0

1

1,350 mL x 2 =

HOW TO SAVE WATER: What happens if we do not turn off the tap on time?

Noèlia Callau Codorniu March 2008

Page 10: Remember and think !

1,

3 5 0

X 2

2 7 0

1,350 mL x 2 =

HOW TO SAVE WATER: What happens if we do not turn off the tap on time?

Noèlia Callau Codorniu March 2008

Page 11: Remember and think !

1,

3 5 0

X 2

2,

7 0 0

1,350 mL x 2 =

HOW TO SAVE WATER: What happens if we do not turn off the tap on time?

Noèlia Callau Codorniu March 2008

Page 12: Remember and think !

1,350 mL x 2 =

1,000 300 50

2

HOW TO SAVE WATER: What happens if we do not turn off the tap on time?

Noèlia Callau Codorniu March 2008

Page 13: Remember and think !

We locate each number in a cell:

1,350

1,350 mL x 2 =

HOW TO SAVE WATER: What happens if we do not turn off the tap on time?

Noèlia Callau Codorniu March 2008

Page 14: Remember and think !

1,000 300 50 1,350

1,350 mL x 2 =

HOW TO SAVE WATER: What happens if we do not turn off the tap on time?

Noèlia Callau Codorniu March 2008

Page 15: Remember and think !

1,000 300 50

2

16

1,350 mL x 2 =

HOW TO SAVE WATER: What happens if we do not turn off the tap on time?

Noèlia Callau Codorniu March 2008

Page 16: Remember and think !

1,000 300 50

2 1,000 X 2

We multiply each column by each row:

1,350 mL x 2 =

HOW TO SAVE WATER: What happens if we do not turn off the tap on time?

Noèlia Callau Codorniu March 2008

Page 17: Remember and think !

1,000 300 50

2 2,000

1,350 mL x 2 =

HOW TO SAVE WATER: What happens if we do not turn off the tap on time?

Noèlia Callau Codorniu March 2008

Page 18: Remember and think !

1,000 300 50

2 2,000 300 x 2

1,350 mL x 2 =

HOW TO SAVE WATER: What happens if we do not turn off the tap on time?

Noèlia Callau Codorniu March 2008

Page 19: Remember and think !

1,000 300 50

2 2,000 600

1,350 mL x 2 =

HOW TO SAVE WATER: What happens if we do not turn off the tap on time?

Noèlia Callau Codorniu March 2008

Page 20: Remember and think !

1,000 300 50

2 2,000 600 50 x 2

1,350 mL x 2 =

HOW TO SAVE WATER: What happens if we do not turn off the tap on time?

Noèlia Callau Codorniu March 2008

Page 21: Remember and think !

1,000 300 50

2 2,000 600 100

1,350 mL x 2 =

HOW TO SAVE WATER: What happens if we do not turn off the tap on time?

Noèlia Callau Codorniu March 2008

Page 22: Remember and think !

1,350 mL x 2 =

1,000 300 50

2 2,000 600 100+ + = 2,700

HOW TO SAVE WATER: What happens if we do not turn off the tap on time?

Noèlia Callau Codorniu March 2008

Page 23: Remember and think !

Multiplying 1,350 mL by 2 is 2,700 mL

That is 2L and 700 mL of wasted water

If we turned off the tap on time,we would save 2L and 700mL of water.

HOW TO SAVE WATER: What happens if we do not turn off the tap on time?

Noèlia Callau Codorniu March 2008

Page 24: Remember and think !

2L and 700 mL

HOW TO SAVE WATER: What happens if we do not turn off the tap on time?

Noèlia Callau Codorniu March 2008

Page 25: Remember and think !

Click on the image to check.

… in a swimming pool ? … in a trailer ?

… in a tanker ?

HOW TO SAVE WATER: What happens if we do not turn off the tap on time?

Noèlia Callau Codorniu March 2008

Page 26: Remember and think !

Click on the image to check.

… in huge tanks ?

… in a big tank ?

HOW TO SAVE WATER: What happens if we do not turn off the tap on time?

Noèlia Callau Codorniu March 2008

Page 27: Remember and think !

Click on the image to check.

… in a medium tank ?

… in a small tank ?

… in a tiny tank ?

HOW TO SAVE WATER: What happens if we do not turn off the tap on time?

Noèlia Callau Codorniu March 2008

Page 28: Remember and think !

Click on the image to check.

… in a bottle ?

… in a bowl ?

… in a bucket ?

HOW TO SAVE WATER: What happens if we do not turn off the tap on time?

Noèlia Callau Codorniu March 2008

Page 29: Remember and think !

Oh no!!!

Page 30: Remember and think !

Oh no!!!

Page 31: Remember and think !

Oh no!!!

Page 32: Remember and think !

Oh no!!!

Page 33: Remember and think !

HOW TO SAVE WATER: What happens if we do not turn off the tap on time?

Noèlia Callau Codorniu March 2008

Page 34: Remember and think !

HOW TO SAVE WATER: What happens if we do not turn off the tap on time?

Noèlia Callau Codorniu March 2008