THIS DAY IN SCIENCE: Smallpox Vaccination - Introduced (Jenner) in 1799

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Blue-Bottle Reaction

Blue-Bottle Reaction

  ««« By James Palcik A solution is prepared containing a dye. The dye, methylene blue, is colourless in a reduced state. Upon shaking the solution, the dye is oxidized and displays a blue colour. As the solution stands undisturbed, the dye fades to colourless as...
PEOE Demonstrations

PEOE Demonstrations

The PEOE strategy is a fun and effective way to conduct demonstrations. In the process, you engage students in scientific inquiry. And once students are engaged in your lesson, teaching science is so much fun and rewarding! What is PEOE? The PEOE strategy follows the...
Alkali Metal Safety

Alkali Metal Safety

Many teachers demonstrate the reaction of lithium, sodium and potassium with water when discussing the trend in reactivity of the alkali metals. In order to conduct this demo safely, it is imperative that only a small quantity of metal is used and that appropriate...
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