Tuesday, May 31, 2011

San Antonio part 2

The activities for kids at the Witte Museum gave each a chance to learn about mechanical and electrical properties and principles.
Bike ride

Canal Control

Climbing tree

Tree house
The bike ride is like a zip line while riding a bicycle. The kid pedals in order to back out to the left end, then pedals the other direction to return.









The canal control game has various ways to allow or prevent water from flowing in various directions. Used for irrigation projects.










The climbing tree gives kids a chance to see how well their climbing skills work, with very little risk.

Pulleys
The tree house shows how others may have lived in woodland conditions.









There are three pulley arrangements, using blocks to lower the effort required for lifting. With one block, the effort is halved, but the speed is doubled. With two blocks, the effort is one-third, but the speed is longer still. There is also a three block pulley.








Lots of fun, even to watch.

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