Mrs. Bradley's Grade 2
We took advantage of all the fresh snow this week to do a demonstration about insulators. We had three jars full of warm water to represent an animal. Each "animal" was then put into a bag with a different type of animal insulator and submersed in a bucket of snow. We measured the temperature of the "animals" at the beginning, and then measured the temperature again after 5 minutes in the snow. We discussed what was needed to make it a fair test and predicted which insulator we thought would work best. We wrote up our results in an observation sheet. Our results determined that fur was the best insulator. We also noticed that polar bears have both fur and blubber, which would make them very much suited to life in the arctic.
CONFESSIONS OF A GRADE 2 TEACHER: The results should have been that feathers were the best insulator. But, I'm guessing the way we positioned the bags in the snow, the feathers must have shifted away from our "animal". Luckily Scientists learn from their mistakes!
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AuthorMrs. Bradley's class is made up of 24 students from Dr. Roberta Bondar School. Archives
June 2018
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