Categories: General Interest
Over the last decade, a pressing issue that has been hotly debated and discussed among science teachers in Ontario, and for that matter, throughout North America, has been the often contentious... read more
Categories: Teacher Demonstration
The International Astronomical Union classifies solar system bodies into three categories: planets, dwarf planets, and small solar system bodies (including comets, asteroids, and... read more
Categories: General Interest
Occasionally I have students turn pennies into silver and gold using zinc powder and 4 mol/L sodium hydroxide solution. Some years ago when I first did this, the excess wet zinc powder was wrapped in... read more
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