This link has been bookmarked by 24 people . It was first bookmarked on 02 Mar 2006, by someone privately.
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Mindy MendenhallThe San Francisco Exploratorium is very well done. The graphics, page layouts, and topics are appealing to a younger audience. I think most of my students would enjoy using this page for part of a project.
collaboration project based learning explore resources web2.0 learning science
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the sidewalk surfers of the 30s, 40s, and 50s had a straightforward mission: Start at the top of a hill and ride down.
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With nothing more than a two-by-four on roller-skate wheels, the sidewalk surfers of the 30s, 40s, and 50s had a straightforward mission: Start at the top of a hill and ride down. The primary goal was just to stay on and avoid collisions; given the humble equipment and rough road conditions, it was no small challenge. Now, thanks in part to improvements in design and materials, skateboarders have a higher calling.
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In a blur of flying acrobatics, skaters leap and skid over and onto obstacles, executing flips and turns of ever increasing complexity--all at top speeds. For onlookers and beginners, it can be hard to follow the action, let alone answer the question that springs naturally to mind: How on earth do they do that? While it may seem that modern skateboarders are defying the laws of physics, the truth is that they're just using them to their advantage.
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Katie Bnet Trekker
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Invented in the late 1970s by Alan "Ollie" Gelfand, the ollie has become a skateboarding fundamental, the basis for many other more complicated tricks.
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