How do I Calculate Density? Density and specific gravity in the geosciences An introduction to density Density is the mass of an object divided by its volume. Density often has units of grams per cubic centimeter ...
Chanelle Savich's insight:
Even better: WHY calculate density? What's the point?? Good explanation and links to other sources for more information.
Invention of the post-it note; not an immediate thing because initial invention of the temporary adhesive was a mistake and no one knew what to do with it. Another inventor (Fry) thought of a use for it 6 years later.
Unfortunately, this isn't from the very best of resources; when you follow "Nick" back to find out more about the author, he claims to have a degree in Biology, but the other accomplishments seem mostly related to publishing this website. The sponsoring site leads back to this one as its exclusive subsidiary, and the sponsoring site has no substance to it at all.
Good for website evaluation! Look for author, sponsor, date, references, . . . . won't find much to support "credible" on this site.
The list itself isn't bad, however, as a follow up to lab safety lessons; students could compare Nick's list to ones they've created.
S.06.PS.01e Implement proper safety techniques in the lab. S.06.PS.01f Identify and demonstrate proper use of lab equipment.
TED Talks You use paper towels to dry your hands every day, but chances are, you're doing it wrong. In this enlightening and funny short talk, Joe Smith reveals the trick to perfect paper towel technique.
What did he want to know? what did he think would happen? How did he test his hypothesis?
Write Tools Exercise: Use 3 sticky notes (after he gives statistics, after he explains his idea, and at the end).
Apply same scientific method to a new hypothesis: if this works for paper towels, would it work for less time under a hand dryer? How much less time?