I recently went to the store to purchase light bulbs. The options were a bit overwhelming. Do I buy standard bulbs (incandescent) or energy efficient ones? If I buy energy efficient ones, which kind: LED or Compact Florescent (CFL)?
After fruitlessly trying to find 100 watt bulbs with two toddlers in tow for several minutes, I gave up bought some cheap 60 watt incandescent bulbs and decided to figure it our later. When later came I learned the old 100 watt bulbs are no longer sold--hence my difficulty finding them. So, before I have to purchase bulbs again, I decided to figure this thing out. And then I thought to myself, there's a great math lesson in here somewhere!
Here's my 1st take at creating a lifetime cost lesson for light bulbs. The MS Word document is 3 pages: incandescent, LED, Compact Fluorescent (CFL). I'm probably going to include it in our system of equations unit.
After fruitlessly trying to find 100 watt bulbs with two toddlers in tow for several minutes, I gave up bought some cheap 60 watt incandescent bulbs and decided to figure it our later. When later came I learned the old 100 watt bulbs are no longer sold--hence my difficulty finding them. So, before I have to purchase bulbs again, I decided to figure this thing out. And then I thought to myself, there's a great math lesson in here somewhere!
Here's my 1st take at creating a lifetime cost lesson for light bulbs. The MS Word document is 3 pages: incandescent, LED, Compact Fluorescent (CFL). I'm probably going to include it in our system of equations unit.
| 5_alg1_-_light_bulbs.docx |
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