In this demo, a polyethylene strip is charged by rubbing with wool. The charged strip is then used to make paper circles stand on their edges inside a Petri dish. This demo introduces students to the charging of materials by induction as opposed to charging by contact.
Click here to download the complete demo…..
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Categories: Gr 9-10 Science, Gr. 11-12 Biology
[caption id="attachment_7428" align="alignleft" width="450"] 41800307 - main blood cells in scale isolated on white background[/caption] Introduction Cells require a constant supply of glucose and... read more
Categories: Gr 9-10 Science, Gr. 11-12 Chemistry
https://youtu.be/WSYtkUnd0WU Bradley teaches us about decomposition reactions and catalysts with a little help from a genie in a bottle. Have questions or want us to walkthrough a certain... read more
Categories: Gr 4-6 Science & Tech, Gr 9-10 Science
Although there’s nothing official about it, it’s traditional to say the upcoming March or vernal equinox signals the beginning of spring in the Northern Hemisphere and autumn in the Southern... read more
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