Thu, Apr 05, 2018 2:26 AM in Changes of Matter
Thank you for that important clarification, Matthew! A similar issue exists with the explanation of convection currents as well. Almost all textbooks talk about "hot air rising" and "cold air sinking" as if there is an impenetrable barrier between hot air and cold air. here's an NSTA link addressing both topics: http://www.nsta.org/publications/news/story.aspx?id=52428
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Tue, Apr 03, 2018 1:36 AM in Changes of Matter
Our primary grade students had fun observing balloons on top of soda bottles covered with black paper and left outside on a warm, sunny day. The air inside the soda bottle expands due to heat causing the balloon to swell up. When the bottle is placed inside the room (or refrigerator for quick results) the air takes up less space and so the balloon shrinks back to its original size.
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Mon, Feb 26, 2018 2:45 AM in Teaching Science to Kindergarten in a Short Time Frame
I am a science specialist at our school and only get five hrs every two weeks with a class. So I usually give my math teachers word problems for algebra or geometry or measurement and ensure that every word problem in math is science-related. I have also requested the ELA teachers to give a science-based topic and grade the reports with them for content accuracy. I've also taken classes where i re...
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