Electricity How much electricity do we use? Have you ever thought about how much electricity we use? Could we use a measuring stick? How could we find.

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Presentation transcript:

Electricity How much electricity do we use? Have you ever thought about how much electricity we use? Could we use a measuring stick? How could we find out?

Electricity How much electricity do we use? The electricity we use is measured by a meter.

Electricity How much electricity do we use? I went to a school to find out how much electricity was used each day. The class recorded the meter reading at the end of each day. At the start of the exercise, the meter reading from the end of the previous week was units.

Electricity How much electricity do we use? START20111 units Monday20276 units Tuesday20437 units Wednesday20631 units Thursday20794 units Friday20950 units The meter readings throughout the week are recorded below. Can you work out how many units were used on Monday? Now work out how many units were used on each day of the week. What calculation do you need to do?

Electricity How much electricity do we use? Monday START Units used Did you manage to work it out? If you got stuck, here is an example below to get you started.

Electricity How much electricity do we use? DAYUnits used Monday Tuesday Wednesday Thursday Friday 165 units 161 units 194 units 163 units 156 units Here are the answers. How did you do?

Electricity How much electricity do we use? On which day of the week was most electricity used? List some reasons why more electricity might have been used on this day. Could it have something to do with the weather, what went on in school or something that happened on the previous evening?

Electricity How much electricity do we use? Does it matter what time the meter reading is taken? Can you find out how much electricity is used in your school? This PowerPoint and lesson are based on work by Ian Mitchell, The Green Egg Company, developed & edited by Amie Andrews for TLCP and Ali Ross, Sundog Energy.