Joined On : April 15, 2009

Teacher https://www.teachertube.com/user/channel/jmachniak
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Waves: More than phun...It's Physic... From: Jmachniak
Added: 8 years ago
Views: 3,167
3,167
Slinky Waves 1 From: Jmachniak
Added: 9 years ago
Views: 971
971
spring waves 1 From: Jmachniak
Added: 9 years ago
Views: 449
449

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