Students use mathematical reasoning to decide how household energy consumption might be reduced.
Using the average daily energy use of different household items, students examine the average daily energy usage rates of household appliances expressed in different forms. Students convert this data to a common form, and then make reasoned judgements about which appliances could be removed to reduce their household electricity usage the most.
Invite students to calculate their personal usage rates for various appliances.
Ask students to use the blank cards to add appliances that they use but are not included in the printed cards.
Calculate your energy bill based on the price of electricity in B.C.:
$0.0945 per kWh for first 1,350 in an average two month billing period (22.1918 kWh per day).
$0.1417 per kWh over the 1,350 Step 1 threshold.
The average B.C. energy consumption per day is 22.19 kWh, all percentages are calculated using that amount.
The kWh/day values were converted using this website, Energy calculator.
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