1. Electricity A lesson plan for Middle school utilizing Microsoft Excel It’s electric Boogie Woogie

2. What is electricity? How do we create electricity?

4. How much money does it cost to run a computer for 24 hours?

5. Open the file called electricity on the hard drive of your computer.

6. Middle School

7. After we fill in the “hours per day used” column. We see column C has been filled in already and marked wattage. What is wattage?

8. Wattage The measure of the amount of power used In this case by each appliance

9. Watt Hours If wattage is The measure of the amount of power used Then what are watt hours?

10. Watt hours The wattages listed on the chart are For one hour Therefore How would we find watt hours?

11. Taking Watts times hours will give us watt hours. =C2*B2

12. Kilowatt hours What is a kilowatt? 1000 watts

13. How do we find kilowatt hours? Watt hours divided by 1000 =D2/1000

14. Your parents probably don’t care how many kilowatt hours you use. You have probably never been yelled at for using too many kilowatt hours.

15. What your parents do care about is the cost of that electricity usage. The electric company charges you per kilowatt hour of power you use.

16. Guess How much does one kilowatt hour of power cost?

17. $0.08275 Just over eight cents per kilowatt hour

18. So to find out how much money these appliances cost per day, we multiply kilowatt hours times 0.08275 =E2*0.08275

19. We are going to copy these good formulas all the way down the columns.

20. We need to use the sigma to find the totals for each column.

21. The total money spent on electricity comes out to about $1.00 per day Is this right? Why not?

22. We have many more appliances to list than those first 10.

23. Delete the entire total line Then you will need to list all of the other appliances that use electricity in your home.

24. The wattages can be found in a file marked “Wattages of Common Appliances” on your Hard Drive.

25. Wattage of Common Appliances Appliance WattsApplianceWattsApplianceWatts Coffee pot200Garage door opener350Electric mower1500 Coffee maker1000Table fan10-25Hedge trimmer450 Toaster1200Ceiling fan10-50Weed eater500 Popcorn popper250Electric Blanket3001/4" drill250 Blender300Blow dryer10001/2" drill750 Microwave (.5 cu. ft.)900Shaver151" drill1000 Microwave (.8 to 1.5 cu ft) 1500laptop computer259" disk sander1200 Hot plate1200desktop computer553" belt sander1000 Frying pan1200laser printer90012" chain saw1100 Dishwasher (cool dry)700Ink jet printer3514" band saw1100 Dishwasher (hot dry)145025" color TV150 Refrigerator (4yrs old, 22 cu ft) 500 Washing machine (vertical axis) 90019" color TV70 Refrigerator (new, 22 cu ft) 200 Washing machine (horizontal axis) 25012" b&w TV20Sink garbage disposal450 Vacuum (handheld)100VCR40Trash compactor1500 Vacuum (upright)700CD player35electric can opener100 Iron1000AC stereo/ home theater500Food processor400 Clothes dryer (electric)4000Clock radio1Food dehydrator600

26. Once you fill in: the name of the appliances, the hours per day that they are used their wattages from the chart

27. you can calculate the other columns using copy and paste to copy the formulas we typed earlier.

28. Replace the total We need to find the total for each column now that they are much expanded. How do we do that?

29. We need to use the sigma to find the totals for each column.

30. After you have found the total cost for one day’s electricity Find the total cost for one month and one year.

31. Then write a sentence: “We currently spend xxxxxxxx on electricity in one year.”

32. Then make changes to your usage to reduce the total cost.

33. Keep track of what appliances you change. See how the total cost is effected.

34. Then write a second sentence: “If we _____________ then we can reduce the cost of our electricity by more than $100 per year.”

35. Hand in your completed spreadsheet document through the student information system