Dishing the Dirt Part 3
Students collect and examine different soil samples. They test for specific types of soil elements and the pH level. They answer questions about optimum growing conditions as well.
3 Views 6 Downloads
Purification of ‘Kewu' (Saltpetre)
How do we get salt out of sea water? The first activity in a seven-part series encourages scholars to purify a substance through dissolution, filtration, and evaporation. Starting with a solid mixture in which the wanted ingredient is...
9th - 12th Science CCSS: Adaptable
Digestive System (Part 1)
The stomach can hold 1.5 liters of food, which remains there for two to three hours in order for digestion to complete. The 33rd video in a series of 47 covers the process of digestion. Classes learn why digestion occurs, about the...
11 mins 9th - 12th Science CCSS: Adaptable
New Review Observing the Lowering of a Melting Point—Microscale Chemistry
Can a solid's melting point be lowered without placing it in an aqueous solution? Discover the surprising truth when chemistry scholars combine hydroxybenzene and menthol crystals during a microscale experiment. A well-written procedure...
10th - Higher Ed Science CCSS: Adaptable