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:

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HOW TO SAVE WATER: What happens if we do not turn off the tap on time? Noèlia Callau Codorniu March 2008.
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Presentation transcript:

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 ! HOW TO SAVE WATER: What happens if we do not turn off the tap on time? Noèlia Callau Codorniu March 2008

Remember and think ! HOW TO SAVE WATER: What happens if we do not turn off the tap on time? Noèlia Callau Codorniu March 2008

Water wasted in 30 sec.= 1,350 mL = 1L 350 mL. 1 min. = sec. 60 = 30 x 60:30 = HOW TO SAVE WATER: What happens if we do not turn off the tap on time? Noèlia Callau Codorniu March 2008

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

1,350 mL x 2 = 1,350 X2 1, HOW TO SAVE WATER: What happens if we do not turn off the tap on time? Noèlia Callau Codorniu March 2008

1,350 X2 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

1,350 X ,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

1,350 X ,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

1,350 X ,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

1,350 X2 2,700 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

1,350 mL x 2 = 1, HOW TO SAVE WATER: What happens if we do not turn off the tap on time? Noèlia Callau Codorniu March 2008

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

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

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

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

1, ,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

1, , 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

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

1, , 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

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

1,350 mL x 2 = 1, , = 2,700 HOW TO SAVE WATER: What happens if we do not turn off the tap on time? Noèlia Callau Codorniu March 2008

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

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

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

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

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

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

Oh no!!!

HOW TO SAVE WATER: What happens if we do not turn off the tap on time? Noèlia Callau Codorniu March 2008

HOW TO SAVE WATER: What happens if we do not turn off the tap on time? Noèlia Callau Codorniu March 2008