Comments on: Mapping the Polar Regions /websites/expertvoices/archives/1357 This blog is focused on helping elementary teachers become more knowledgeable about the polar regions and providing best practices on how to integrate polar concepts into their teaching. Ideas for connecting science and literacy through literature and writing, exemplary science activities, incredible pictures, tales of adventure, and stories of indigenous people and amazing animals will be part of each posting. Fri, 08 Mar 2013 04:09:47 +0000 http://wordpress.org/?v=2.3.3 By: Ava /websites/expertvoices/archives/1357#comment-941 Ava Thu, 27 Mar 2008 16:51:07 +0000 /websites/expertvoices/archives/1357#comment-941 This didn't really help me! I need to know why peopleexplore the polar regions!!!!!!! This didn’t really help me! I need to know why peopleexplore the polar regions!!!!!!!

]]> By: carollandis /websites/expertvoices/archives/1357#comment-940 carollandis Wed, 26 Dec 2007 17:35:18 +0000 /websites/expertvoices/archives/1357#comment-940 Another interesting thing about magnets is how the polarity changes when a magnet is broken into two pieces. When a magnet is broken, it seems like the two halves should just fit back together and be held by the magnetic force. However, the two halves won't go back together...they repel. This effect is especially obvious if the break is jagged or irregular. That may be too complex for elementary students to consider, but it's fairly likely that a bar magnet might be broken in a classroom, providing a learning opportunity. Another interesting thing about magnets is how the polarity changes when a magnet is broken into two pieces. When a magnet is broken, it seems like the two halves should just fit back together and be held by the magnetic force. However, the two halves won’t go back together…they repel. This effect is especially obvious if the break is jagged or irregular.

That may be too complex for elementary students to consider, but it’s fairly likely that a bar magnet might be broken in a classroom, providing a learning opportunity.

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