by msander | Mar 13, 2019 | Gr 9-10 Science, Gr. 11-12 Chemistry
Did you realize that just like certain animals here on Earth, there are endangered elements too? For example, we’re constantly losing helium, a gas that defies gravity and escapes our atmosphere into space. This incredible element is in high demand all over the globe....
by msander | Nov 30, 2017 | Gr 7-8 Science & Tech, Gr 9-10 Science, Gr. 11-12 Chemistry
If you’ve ever tapped a screen to send a tweet, opted for the bottled soda because it tastes better, or drooled over art glass in a gallery, then your life has been changed for the better by the transparent yet durable combination of sand and simple chemicals we call...
by msander | Oct 18, 2017 | All Science Teachers
The collision of two neutron stars, seen in an artist’s rendering, created both gravitational waves and gamma rays. Researchers used those signals to locate the event with optical telescopes. For the first time, scientists have caught two neutron stars in the...
by cbrookallred | May 25, 2017 | Gr 9-10 Science
Concept attainment exercises often use verbal or written forms of thought. The attached student exercise uses visual imagery to teach the concepts of Elements, Compounds and Mixtures at the atomic and molecular level. The recent emphasis on literacy all too often only...
by msander | May 15, 2017 | Gr 9-10 Science, Gr. 11-12 Chemistry
Hank gives us a tour of the most important table ever, including the life story of the obsessive man who championed it, Dmitri Mendeleev. The periodic table of elements is a concise, information-dense catalog of all of the different sorts of atoms in the universe, and...
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