2 min listen
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ratings:
Length:
6 minutes
Released:
Dec 4, 2018
Format:
Podcast episode
Description
From the outdated Presidential Fitness Test to today's FITNESSGRAM, Americans have been giving standardized fitness tests to middle school kids for decades. Learn the past and present of these exams in today's episode of BrainStuff. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers
Released:
Dec 4, 2018
Format:
Podcast episode
Titles in the series (100)
How Gun Silencers Work: The sound of gunfire is incredibly loud, and it is amazing that anything is able to silence a firearm. However, the principle behind a gun silencer is surprisingly simple. Check out our HowStuffWorks article to learn more about silencers. by BrainStuff